I've watched a few of your videos with fascination. I'm an advocate of science in my own little way by trying to support real science and explain why I disagree with the pseudo scientific woo woo that is so popular with some people. I managed to complete about two years of a chemical engineering program so I have quite a privileged scientific perspective compared to others with no formal education to speak of in math and science. What drives me nuts is when someone honestly and genuinely asks me a perfectly reasonable question like "How do they know how far the sun is?" I feel so embarrassed when I cannot give them a reasonable and satisfactory answer. Thank you so very much for collecting and bringing this information in such an accessible, straight forward and easy to digest format.
Lovely temperate speaking voice; lovely background music; and filled with awesome images and information. Been greatly enjoying many videos made by you. Thank you!
It's people like you who should be on the Discovery Channel and National Geographic teaching young and old about astronomy instead of these garbage reality tv shows. Thank you so much for uploading this sir, really appreciated.
I was just thinking of something similar that Flat-earthers would have a hay-day with this, and am I quite sure they may have left some comment behind on this video. Perhaps they were the ones that gave all those "thumbs down" for the video!
In His Image - Speed doesn't do ANYTHING to us. Why would it? Only acceleration does something to us. Ever flown in a plane at 500 mph? Do you feel constantly pushed back to your seat? Nope. Is it impossible to walk up the aisle? Nope. Because the movement is constant. You only feel it when accelerating or decelerating. All our motions on the spinning and moving earth are constant. No acceleration.
In His Image - Yes, we are on the outside of a sphere, with GRAVITY holding us to the sphere. Earth's gravity is much stronger than any effects from our constant movement. Of course the atmosphere spins with the earth. This is because of gravity and friction. Think of a blender with liquid in it. The tiny blade at the bottom gets ALL the liquid spinning, because of the friction of the water molecules against each other. Same with earth's atmosphere, it is pulled by gravity, which causes friction against the ground, and friction all the way up air molecule to air molecule. It would take a counteracting force to PREVENT the atmosphere from spinning with the earth. There is no 67k mph wind because the air moves with us.
VoysovReason It wouldn't matter, they would claim David is some paid shill part of the huge conspiracy to "keep us in the dark" That's what's so tragic about those people, they're beyond educating. But I also think they only exist here on youtube pretty much because they've watched too many videos and went down that rabbit hole.
This wouldn't do anything to convince flat earthers. There are so many simple things they could do on their own, little children's experiments, that would at the very least disprove their flat earth postulations. But they don't do them because they don't want to face the truth. They could also spend a little cash and fly *nonstop* from Sydney to Johannesburg on Qantas flight 63. According to their flat earth map, Sydney and Johannesburg are 14,500 miles apart, and yet the max range of the airplane (in this case a Boeing 747-400) is 7,300 nautical miles. Hmmm...the plane almost doubles its max range without crashing...every single day! Never mind that the maximum cruising speed of a 747-400 is mach 0.85, or 652 mph, much less than the 1,000+ mph it would have to travel to make the flight on time. Flat earthers are really not into logic, or facts, or simple math.
Hi, I found your channel a few months ago and watch it every week, incredible work you have done, thank you so much for the detailed engineering analysis.
I fall asleep listening to these videos, why, because they're so interesting as well as the way they're narrated is so calming, so smoothly told, so I fall asleep listening to this all the time. Thanks Mate.
I am absolutely blown away with this video book. I am still going through it, and am continually impressed with the quality and care I see in every video. I always wanted to know how we could measure distances greater than our solar system, and your method of building the "ladder" explains things in a way that I can understand. I cannot thank you enough for your effort, but I can tell you that your labor of love is very much appreciated!
+Michael Zaragoza Examining how we know what we know has been a driving force for my work on these video books. For example, the cosmic distance ladder has always been there for the professional astronomer, but astronomy videos never seemed to reference it. I am pleased to see comments like yours that reinforce one of my key objectives. Thank you.
+Angel S No human being actually believes the earth is flat. Those that say the earth is flat, are just arguementative people that like to disagree about anything and everything.
Earth moves at 66,600 mph. Weighs 6.660 sextillion tons. It is also tilted at 66.60 degrees or 23.4 If thats not strange, I don't know what is. Well actually, Washington Monument turns out to be 6660 inches tall.
This is awesome. I loved learning about the parallax, and seeing the differences between the geocentric and heliocentric models illustrated. And I loved your sense of humour. You did tons of work and research on this. Keep it up :)
Thanks David for this great series, I really appreciate the background music and I was thinking in just that if you were my teacher at school teaching me math by this way you are explaining things with, probably I could've changed my whole perspective about math back then, I used to hate math and all relative things to it and thought they were boring stuff but as I grew older I realized how important it is for exploring the universe around us and how it makes almost every technology nowadays possible, I still can't get it figured out though thanks to these technologies!
David, I really want to compliment you again on the great work you've done here. You also have terrific taste in music; I particularly enjoyed the Rodrigo guitar concerto.
Graag wil ik mijn diepe waardering weergeven voor de manier waarop DAVID BUTLER de video' s presenteert, buitengewoon goed omdat hij het heerlijk rustig doet zodat het veel beter te volgen is ook voor degenen die wat meer tijd nodig hebben omzet allemaal wat beter te begrijpen. Heel, heel hartelijk dank heer David! En groeten van Jo.
Jo Kusters Dutch is so awesome! :) I know German, so it reminds me of a mix between English (little bit of French) and German gone wild. :) And I agree with your sentiment! :)
Nog heel hartelijk dank voor uw reaktie, inmiddels heb ik toch erg genoten van de filmpjes van David en ben er erg blij mee, vooral voor de heerlijk rustige manier waarop hij het uiteen zet. Overigens het begrip van het Engels gaat geleidelijk aan steeds beter. Groetjes en Dank van, Jo.
Your videos have the sort of tenor which might actually have a chance of reaching through to some of my Young Earth family members and surrounding community. Much appreciated.
You are an outstanding teacher, illustrator and Historian, the calculations explained are so simple and at the same time exact. Thank you so much for sharing your knowledge with us.
Sledcat Back when I was in school we never got to watch informative videos like such, it would of made school so much better with visuals like this, but then again maybe we would of thought in our heads it was more laid back so I would of forgot more, Idk. If the teacher were to give the heads up about the tests the following days then that would've stuck better.
Dr. D.Butler is second to none explaining difficult concepts and making peoples think they are intelligent ! If you were British, Sir, you should be knighted !
I just got sticked to your video without making any skip. Very interesting, useful, complicated things are easily answered by this video. Thank u very much sir
Nice video.Very explanatory.... How long will United States,Myanmar and Liberia, resist to use the metric system? These 3 countries are the last in the world using Standard Measure System? Understand ,I´m not complaining......just wondering,
Excellent. This perfectly answered and put into perspective a query I had. Very well presented and bite sized, just right for someone like me, who has the curiosity but lacks the facility to make sense of it due to my ever diminishing attention span. I have subscribed and I am about to download your entire series. I am really looking forward to absorbing and digesting this. Hmm. I think it may be time for lunch.
Saw the first 5 minutes... subscribed. I love that you actually factor in math instead of glossing over the important stuff with goofy antics and editing. Fantastic!
at 4:37 shouldn't the narrator read 6 Billion, 600 MILLION tillion tons rather than 6 Billion, 600 thousand.... or is the figure incorrect in the graphic?
David Butler with the amount of information you have provided me with and the knowledge I have gained, I should be thanking you good sir. Unfortunately I don't have the words to express how much I appreciate your work, which is really a service to us all.
Thanks for the free class! I agree with the other people who wished you had been their teacher. It's genius to add the math along in the course! How many creation/evolution debates have you seen? lol!!
it was not Coppernicos,but Aryabhata hindu astronomer mathematician and inventor of zero who proposed the heliocentric model in year 500. 1000 years before europeans.
As mentioned, Aryabhata advocated an astronomical model in which the Earth turns on its own axis. His model also gave corrections (the śīgra anomaly) for the speeds of the planets in the sky in terms of the mean speed of the sun. Thus, it has been suggested that Aryabhata's calculations were based on an underlying heliocentric model, in which the planets orbit the Sun,[33][34][35] though this has been rebutted.[36] It has also been suggested that aspects of Aryabhata's system may have been derived from an earlier, likely pre-Ptolemaic Greek, heliocentric model of which Indian astronomers were unaware,[37] though the evidence is scant.[38] The general consensus is that a synodic anomaly (depending on the position of the sun) does not imply a physically heliocentric orbit (such corrections being also present in late Babylonian astronomical texts), and that Aryabhata's system was not explicitly heliocentric.
While a moving Earth was proposed at least from the 4th century BC in Pythagoreanism, and a fully developed heliocentric model was developed by Aristarchus of Samos in the 3rd century BC, these ideas were not successful in replacing the view of a static spherical Earth, and from the 2nd century AD the predominant model, which would be inherited by medieval astronomy, was the geocentric model described in Ptolemy's Almagest.
10:33 How is it possible that one person with just one pencil (or feather) and a piece of paper in his hand can calculate this??? I feel myself so stupid :-(
"Correcting" him about Copernicus you just sound like some one who want people to think they are smart. Just because you looked up some fringe information from other cultures doesn't change anything. I'm sure many people had the independent "idea" that the earth or the sun was the center of the universe. It is what anyone would infer from observation. Copernicus WAS the first the create the mathematical model and make it work. Even though he was wrong. Focus on the science sir. Not trivia.
+Early Theodore Ritter Copernicus did not create a workable model. He retained the deferents and epicycles of Ptolemy. It was KEPLER who created the first workable model. Learn some history, sir. Not whatever you said.
+Jim Abraham Copernicus was the first to put the sun at the center. I did not say his model was correct. I said he was the first and it did work just not correctly. I said in my post he was wrong so where is my history incorrect? To make a statement that I need to learn some history is just rude and inflammatory. I would be happy to discuss it with you, however the concept of friendly debate seems to escape your thinking. His theory was radically different than Ptolemy. Ptolemy's model was NOT heliocentric. Kepler was a lot later and worked out the laws of planetary motion. Kepler did not come up with the heliocentric theory. If I am wrong about Copernicus, please educate me on what Copernicus did then? And while you are at it correct the following websites too. They desperately need your help! Good day, sir. scienceworld.wolfram.com/biography/Copernicus.html kepler.nasa.gov/Mission/JohannesKepler/#anchor784359 en.wikipedia.org/wiki/Nicolaus_Copernicus
Early Theodore Ritter All I said was that I think Copernicus is OVERRATED. Not that he was not the first to publish the idea of heliocentrism. You understand, don't you, that Copernicus, in his model, puts the sun central, so props for that, but otherwise DOES NOT CHANGE the Ptolemaic system? Do you understand that Copernicus DID NOT provide a WORKING model of the solar system? Whereas Kepler DID. That's all I'm saying, is that in my opinion, it should be called the Galilean/Keplerian/Newtonian revolution, not the Copernican revolution. That's all I'm saying. Not taking anything away from Copernicus. Only recognizing that the idea had occurred to many people, and that being the first in print with "sun's in the middle" is hardly worthy of the same esteem as the accomplishments of Galileo, Kepler, Newton. Galileo have us inertia, Kepler the laws of planetary motion AND elliptical orbits, Newton the foundation for it all. Copernicus just put the sun in the middle, which many had speculated before him. The revolutionary ideas were not Cs, but the other guys. That's all. Take a pill and calm down. What I'm saying is hardly, um, "revolutionary."
i think they are fewer here because this is an obscure science video and he doesn't have many subscribers. I sadly admit I was looking around, hoping not to find too many :)
+Fasal Rahman KP Yes, I think that it is important to use SI. In fact, we in science should start using ONLY SI, and abandon completely English traditional weights and measures. Let the stupids have their miles and please, let the rest of us use ONLY SI. :)
These videos are superb - well reasoned and presented. Just one suggestion: could you leave the captions up a bit longer, my slow brain finds it hard to take everything in in the time provided. Thanks!
Really ... I mean ... really - is that like, your opinion or is that a proven fact? Because if it is the former, you are actually entitled to it, however wrong, idiotic, uninformed, narrow minded, shallow or stupid it might be - but if is is not the latter .... well - then you have not advanced the human race at all ... not in the slightest - you have then actually moved all of us back in knowledge, insight and understanding - and that's no help now is it?
You will be okay. Read the bible my Brother and it is all there. Yeshua who is God came to the world over 2000 years ago as a human. So, yes it is a fact Yeshua holds everything together. Some people like yourself have a hard time seeing truth because they are part of this world and it's system. Know him, know truth.
Holy Quran says, all celestial object goes on their orbit including the sun but people said that sun does not have an orbit and stationary but as time goes by, it has been discovered indeed sun also have an orbit goes around the galaxy.
+Get outta here! Quran also says, universe is expanding and all living things came from water. Space and matter were joined to gather as one unit, it was a split of asunder everything came from (which sounds very much like Big-bang.) You are right, it does not matter what Quran says.
Rizwan Rafeek first of all it does not matter what the Quran says. Secondly it does not say what you claim. You take the arabic passagea and twist the meaning to sucker in followers. I read the Quran. It does NOT say the universe is expanding. It says the universe was made from smoke. Which is false
+Get outta here! _"It says the universe was made from smoke. Which is false "_ Particular verse you are referring to, addresses how the our milk-way came about, our galaxy might have been in state like smoke (primordial gas) which is what Quran reference as smoke. _"I read the Quran. It does NOT say the universe is expanding. "_ I actually read it, with many different translation, they are all saying the same thing, in different ways. Translator Sahih International Quran 51-47 And the heaven We constructed with strength, and indeed, We are *its expander* . Translator Pickthall Quran 51-47 We have built the heaven with might, and *We it is Who make the vast extent (thereof)* . Translator Yusuf Ali Quran 51-47 With power and skill did We construct the Firmament: for it is *We Who create the vastness of pace* . Translator Shakir Quran 51-47 And the heaven, We raised it high with power, and most surely *We are the makers of things ample* . Translator Muhammad Sarwar Quran 51-47 We have made the heavens with Our own hands and *We expanded it* . Translator Mohsin Khan Quran 51-47 With power did We construct the heaven. Verily, *We are Able to extend the vastness of space thereof* . Translator Arberry Quran 51-47 And heaven -- We built it with might, and *We extend it wide* .
None of that shows the Quran is some kind of science guide. You can talk about "extend" and "expanse" all day long. The context is nothing regarding the expansion of the universe, but merely making a point that yes, even in those days people understood that beyond the firm earth is an infinite heavens. The expanse is mentioned in the Bible in Genesis 1:1 "In the beginning god made heavnes and the earth. The earth was a void and the face of god hovered over the face of the waters of the abyss. You use the word "expanse" to refer to the "heavens" and "the firmament" . No, your Quran does not tell us anything that either wasn't speculated already or already discovered before 615AD IN addition, most of these kind of concepts were 1. In the Christian Bible FIRST. 2. In Greek cosmology Second. 3. In Earlier Egyptian mythology third. The Quran did not discover these concepts, but copied them. From The Bible book of Job 9:8 "Who alone stretched out the heavens..." Split apart - Revelations 6:14 www.iflscience.com/space/ancient-egyptians-knew-about-distant-flashing-star-3000-years-earlier-thought/
Wonderful series of videos!!! The graphics, the music, the explanations and the narrator's voice create an experience that feels like an elegant evening with sophisticated friends.
yes, it it makes a pleasant change from the vast majority of you tube offerings, especially in the comments section. although there is a hint of of willful ignorance here and there...
Notice how NASA can figure out what's going around Uranus; yet can't resolve the hunger problems, poverty, and massive Warfare on Earth. What if I told you, Uranus is the center of your universe?
max5250 he absolutely has a point. Which doesn't exclude your argument...(without the insult part of course). Here is a thought: what if, just what if hunger, warfare, human life, are way more complex math equations than any mathematician is capable of conceiving (for now)? My point is when it comes to knowledge, beyond the limitations of our own conditions, any statement can lead to better, deaper, higher understanding. Math is one of the tools, imagination another as Einstein himself stated.
@@FromTheHeart2 He has no point at all, since he is mixing science and space exploration with things that are not related (natural science with social science). We already know that predicting events in social science is far more difficult than predicting events in natural sciences, because social science is mor complicated because it depends on much more variables that are difficult to observe, measure or predict its values. When we speak about the knowledge, it is not true that any statement can lead to better understanding, because, if was true, any idiot could contribute to science, but that never happened. In order to get deeper and higher understanding, you first need to understand current knowledge, and find something new that explains observable events better then current knowledge. Imagination sure does help us much, but first we have to understand previous knowledge to acquire some new one.
max5250 everything is related and intricately intertwined, especially when it deals with the Sun. Every human being is the center of their universe. Your source of wealth including food is as vast as the universe. The Bible clearly tells you, the Lord was the Alpha and Omega the beginning and the end The Offspring of David the Bright Morning Star. Notice it says, Bright Morning Star. It does not say bright yearly star. Also note, that history is part, of social science. Galileo and Isaac Newton we're all part of History and social science, which shaped our economy and way of thinking. I say this with Dynamism, they were hypnotist. Global warming means, the Earth is supplying more farmland. We are about to go to War World War 3 over food. The biggest lie today is there is not enough food to feed the world. Go figure🤔 The Great Eclipse of Aug. 21 2017. Sign of the end times. Life Blocked out. Future blocked! California fires, Las Vegas shootings, tsunamis, hurricanes earthquakes. All life comes from the sun. Food comes from God. To misquote the Sun is to misquote your future. I have proof that this drawing, in this video is nothing more than a hoax. An instrument to prove superiority, of knowledge. If you took the time out to actually look at the solar system yourself, you would see that there are days when the moon is gigantic and 1 day later; it is half the size. This obviously was not caused, by an orbit change. The same goes for the Sun. The Earth, the Sun and the Moon are a living things. They are the most important Trinity that you will ever know. The Sun goes around the Earth every day. The Sun goes around the Moon every day, if you were on the moon ( which = 30 earth days) It takes 29 days for the time relativity, time change. Just as it is 3 hours from the East Coast to the West Coast. Each month or moon 30, days × 12 = 360 Which is a perfect circle. The Earth the Sun and the Moon are perfect circles. Your eyeball is the only other Perfect Circle. God Made You In His Image. 😊 Galileo and the people of the fake moon landing are liars. Math can never be correct if your variables are incorrect. Our society which is social science wants you to believe that months's have 28 days or 29 days or 31 days or 30 days. This is deception! Moving the clock up and down is also another means of deception. That is what makes up the extra 5 days, making it apear to being 365 days a year. Nevertheless most people are happy with this unprovable drawing. That is the real reason why you have starvation War and poverty in the world. And needless to say Godless people; who fail to see, how beautiful they really are and that they are the center of their own universe.
How hard is it to estimate 60% of a value and add that to the original value. If you are seriously interested in astronomics you should know the basic numbers yourself already. Avg distance to moon = 384k km, 4k km in diameter.
What a truly excellent video - so humbly and gracefully presented with fantastic and easy to understand illustrations. If you had been a teacher at my school I would have been queing at your door eager for the next lesson. Thanks for sharing your expertise in this way.
This makes the works of God in creation all the more remarkable. He asks of us that we love one another. A better use of our efforts I would suggest than fuss about the universe- simply give thanks for the wonder of it all.
These are a superbly edited and presented series of documentaries, the perfect balance of level and explanation. I'm fairly advanced in this area but the summaries here have added measurable background information and clarified facts, thank you very much.
I have just watched it, am progressively working my way through all. Do you have this set available for sale in HD / on DVD? As a gift for either my 77 year old father, (a life-long amateur), a 16 year old son (looking for somewhere to focus mental energy) or my 24 year old PhD daughter (who is in at least this way a chip off the old block), they would be considered by all a bargain. I really cannot recommend this series enough, thoroughly enjoyable; presentable to audiences from near beginners or just more information and examples to serious amateurs, it's the best out there by a margin. I'd just like to point out to others reading this that I consider myself a low end semi-expert, I was a guest evening lecturer on deep space a a significant college in England, and have tested my own calculations for distances, magnitudes and Supernova masses etc. but still many points are clarified by this series - the best I've seen. Thank you again,
I did put them all on a blue-ray disk, but it was just for my children and grandchildren. Nothing I do in this arena is for sale. Thanks for asking. I love your note.
![The Milky Way [go to 4K edition] go to https://youtu.be/uVxrsJ5lZlQ](http://i.ytimg.com/vi/q7prQTS_N3Y/mqdefault.jpg)
I love this guy. Great narrator and storyteller
What stories does he tell?.....
I've watched a few of your videos with fascination. I'm an advocate of science in my own little way by trying to support real science and explain why I disagree with the pseudo scientific woo woo that is so popular with some people.
I managed to complete about two years of a chemical engineering program so I have quite a privileged scientific perspective compared to others with no formal education to speak of in math and science.
What drives me nuts is when someone honestly and genuinely asks me a perfectly reasonable question like "How do they know how far the sun is?"
I feel so embarrassed when I cannot give them a reasonable and satisfactory answer.
Thank you so very much for collecting and bringing this information in such an accessible, straight forward and easy to digest format.
Your most welcome. I appreciate the note. All my videos are about 'how we know'. I;m glad to see it is having an impact.
Conquest of Paradise by Vangelis
I am very happy I found this video. Thank you for making it.
nice little touch to add annotations for the conversion from miles into kilometers.
Huge respect for making these videos Sir.
Lovely temperate speaking voice; lovely background music; and filled with awesome images and information. Been greatly enjoying many videos made by you. Thank you!
David your videos are a master class. Love the music as well. great job, great education.
+Chris Dorman speaking of the music, 8:40 i know I have heard this track before but I cant recall where
+PantsuMann It is Vangelis' "Conquest of Paradise".
Thank you!
PantsuMann
Just found your videos today from researching the Andromeda. Love the videos keep it up
David Butler, your lesson are amazing! In some ways you remind me of Carl Sagan.
ken02 why do you say that? All I know are these videos of him
It's people like you who should be on the Discovery Channel and National Geographic teaching young and old about astronomy instead of these garbage reality tv shows. Thank you so much for uploading this sir, really appreciated.
Very well said!
Excellent work. I'm going to send this to the flat earthers. ;)
I was just thinking of something similar that Flat-earthers would have a hay-day with this, and am I quite sure they may have left some comment behind on this video. Perhaps they were the ones that gave all those "thumbs down" for the video!
In His Image - Speed doesn't do ANYTHING to us. Why would it? Only acceleration does something to us. Ever flown in a plane at 500 mph? Do you feel constantly pushed back to your seat? Nope. Is it impossible to walk up the aisle? Nope. Because the movement is constant. You only feel it when accelerating or decelerating.
All our motions on the spinning and moving earth are constant. No acceleration.
In His Image - Yes, we are on the outside of a sphere, with GRAVITY holding us to the sphere. Earth's gravity is much stronger than any effects from our constant movement.
Of course the atmosphere spins with the earth. This is because of gravity and friction. Think of a blender with liquid in it. The tiny blade at the bottom gets ALL the liquid spinning, because of the friction of the water molecules against each other. Same with earth's atmosphere, it is pulled by gravity, which causes friction against the ground, and friction all the way up air molecule to air molecule. It would take a counteracting force to PREVENT the atmosphere from spinning with the earth. There is no 67k mph wind because the air moves with us.
VoysovReason It wouldn't matter, they would claim David is some paid shill part of the huge conspiracy to "keep us in the dark" That's what's so tragic about those people, they're beyond educating. But I also think they only exist here on youtube pretty much because they've watched too many videos and went down that rabbit hole.
This wouldn't do anything to convince flat earthers. There are so many simple things they could do on their own, little children's experiments, that would at the very least disprove their flat earth postulations. But they don't do them because they don't want to face the truth. They could also spend a little cash and fly *nonstop* from Sydney to Johannesburg on Qantas flight 63. According to their flat earth map, Sydney and Johannesburg are 14,500 miles apart, and yet the max range of the airplane (in this case a Boeing 747-400) is 7,300 nautical miles. Hmmm...the plane almost doubles its max range without crashing...every single day! Never mind that the maximum cruising speed of a 747-400 is mach 0.85, or 652 mph, much less than the 1,000+ mph it would have to travel to make the flight on time. Flat earthers are really not into logic, or facts, or simple math.
Hi, I found your channel a few months ago and watch it every week, incredible work you have done, thank you so much for the detailed engineering analysis.
Why in the nine hells would anybody give this a thumb down??? This is captivating, educational and brilliant. Man there are 422 really stupid people
The best astronomy videos of all the series. I wish you health and happiness.
I fall asleep listening to these videos, why, because they're so interesting as well as the way they're narrated is so calming, so smoothly told, so I fall asleep listening to this all the time.
Thanks Mate.
Same...
Me too 😂
I am absolutely blown away with this video book. I am still going through it, and am continually impressed with the quality and care I see in every video. I always wanted to know how we could measure distances greater than our solar system, and your method of building the "ladder" explains things in a way that I can understand. I cannot thank you enough for your effort, but I can tell you that your labor of love is very much appreciated!
+Michael Zaragoza Examining how we know what we know has been a driving force for my work on these video books. For example, the cosmic distance ladder has always been there for the professional astronomer, but astronomy videos never seemed to reference it. I am pleased to see comments like yours that reinforce one of my key objectives. Thank you.
And people still believe the Earth is still flat...
+Angel S It's not Flat !!!? Oh Crap...
+Angel S No human being actually believes the earth is flat. Those that say the earth is flat, are just arguementative people that like to disagree about anything and everything.
+White and Black Zebra There are people who really believe this shit. Flat Earth Society.
Earth moves at 66,600 mph.
Weighs 6.660 sextillion tons.
It is also tilted at 66.60 degrees or 23.4
If thats not strange, I don't know what is. Well actually, Washington Monument turns out to be 6660 inches tall.
+Y10Q 68000 mph
This is awesome. I loved learning about the parallax, and seeing the differences between the geocentric and heliocentric models illustrated. And I loved your sense of humour. You did tons of work and research on this. Keep it up :)
This guy has a great voice for narration.
Your explanation of measuring distances is the best I've ever encountered and answered so clearly questions I've had for a long time. Thanks.
Stan Lee's talent never ceases to amaze me. Hats off to you sir.
Thanks David for this great series, I really appreciate the background music and I was thinking in just that if you were my teacher at school teaching me math by this way you are explaining things with, probably I could've changed my whole perspective about math back then, I used to hate math and all relative things to it and thought they were boring stuff but as I grew older I realized how important it is for exploring the universe around us and how it makes almost every technology nowadays possible, I still can't get it figured out though thanks to these technologies!
OMG! I saw he was standing on Mars without space suit😉😃
Malik Atif That's right! So NASA is hiding that we can actually just hang out there!!!
Stupid NASA! : )
Because spacesuits are used in space.
Amazing what they can do with CGI, hey? They can even make people dressed in spacesuits in a swimming pool appear to be in space!
Malik Atif I love that part!!
Don't be silly....He was using a space modulator.
It is really enjoyable to have a listen to you, telling basic facts of our universe! I really enjoyed watching this video! Thank you! ☺
What a superb presentation.
David, I really want to compliment you again on the great work you've done here. You also have terrific taste in music; I particularly enjoyed the Rodrigo guitar concerto.
Excellent! Clear and understandable. I like the fact you explain the development of our knowledge.
Graag wil ik mijn diepe waardering weergeven voor de manier waarop DAVID BUTLER de video' s presenteert, buitengewoon goed omdat hij het heerlijk rustig doet zodat het veel beter te volgen is ook voor degenen die wat meer tijd nodig hebben omzet allemaal wat beter te begrijpen. Heel, heel hartelijk dank heer David! En groeten van Jo.
Jo Kusters Dutch is so awesome! :) I know German, so it reminds me of a mix between English (little bit of French) and German gone wild. :)
And I agree with your sentiment! :)
Nog heel hartelijk dank voor uw reaktie, inmiddels heb ik toch erg genoten van de filmpjes van David en ben er erg blij mee, vooral voor de heerlijk rustige manier waarop hij het uiteen zet. Overigens het begrip van het Engels gaat geleidelijk aan steeds beter. Groetjes en Dank van, Jo.
you rock dude. insta-subscribed at the end of the video. thanks Sir David
Your videos have the sort of tenor which might actually have a chance of reaching through to some of my Young Earth family members and surrounding community. Much appreciated.
And I've got to give 5 stars for the choice of music all along. done with great taste.
i like your narration - it has a kind of soothing quality - so does the background music .
His voice and music is soothing, helps me sleep
You are an outstanding teacher, illustrator and Historian, the calculations explained are so simple and at the same time exact. Thank you so much for sharing your knowledge with us.
If I were a science teacher, I'd feature one or two of your videos per week, and have a test the following day. Your the best!
Sledcat Back when I was in school we never got to watch informative videos like such, it would of made school so much better with visuals like this, but then again maybe we would of thought in our heads it was more laid back so I would of forgot more, Idk. If the teacher were to give the heads up about the tests the following days then that would've stuck better.
Probably the most favourite channel for learning and it is Magical for me.
Imagine.. The billions we invest in war and what have we accomplished. We could have had our own fucking station on mars already!?
Thanks. I'm glad your getting a lot out of them.
Dr. D.Butler is second to none explaining difficult concepts and making peoples think they are intelligent ! If you were British, Sir, you should be knighted !
It came to me by RUclips recommendations. Shame for me not finding your work by myself. Excellent job! I am your fan.
This videos are great, but you should also use Metric measurements.
I feel like a simpleton after going through the in depth, very thoughtful and useful material. I found it educational and entertaining. Fantastic!
Well put together, keep it up!
I just got sticked to your video without making any skip. Very interesting, useful, complicated things are easily answered by this video. Thank u very much sir
Nice video.Very explanatory....
How long will United States,Myanmar and Liberia, resist to use the metric system? These 3 countries are the last in the world using Standard Measure System?
Understand ,I´m not complaining......just wondering,
Why are you so obsessed about what another sovereign country chooses to measure with?
great effort. highly appreciated. I am a physician interested in cosmology. this work is easy to understand
July 2018, this year was the closest approach too, around 35 million miles.
dang this is a great presentation, very well done
HAHA, HOW AM I A NAZI.....I SPEAK OUT AGAINST NAZIS ALL DAY LONG
your rebel flag avatar isn't historically accurate, it should just be a white flag. lol
Unfortunately I'm not even smart enough to follow along!!
Thank you so much Dr. Butler for creating this amazing channel, this is a solace in RUclips.
this guy is amazing
Excellent. This perfectly answered and put into perspective a query I had.
Very well presented and bite sized, just right for someone like me, who has the curiosity but lacks the facility to make sense of it due to my ever diminishing attention span.
I have subscribed and I am about to download your entire series.
I am really looking forward to absorbing and digesting this.
Hmm. I think it may be time for lunch.
Wait, so we have a crazy thing just whipping around out there in front of Earth's orbit? The hell?!
nicely done. good narration speed, clear math, and you build on previous knowledge to get a complete picture. bravo.
Your my sound before i go to sleep
Saw the first 5 minutes... subscribed. I love that you actually factor in math instead of glossing over the important stuff with goofy antics and editing. Fantastic!
I'm sitting next to this guy the next time I take a test.
I'm really enjoying your videos, and your style. Keep up the good work, sir!
Galileo looked at sun spots with a telescope? That sounds like a bad idea lol
No directly... He used some dark glasses in btw the telescope and the sun, similar to those glasses used on church windows. This Italian was smart.
Simply beautiful! Very very good video and much appreciated.
at 4:37 shouldn't the narrator read 6 Billion, 600 MILLION tillion tons rather than 6 Billion, 600 thousand.... or is the figure incorrect in the graphic?
Anon Ymous Good catch. I should have said 6 billion, 600 million trillion tons. Thanks.
David Butler with the amount of information you have provided me with and the knowledge I have gained, I should be thanking you good sir. Unfortunately I don't have the words to express how much I appreciate your work,
which is really a service to us all.
+Anon Ymous yes you are right, it,s 6600 million trillion tons
+Anon Ymous that was a test to make you are paying attension ! ;)
Thanks for the free class! I agree with the other people who wished you had been their teacher. It's genius to add the math along in the course! How many creation/evolution debates have you seen? lol!!
Thanks for your thoughts. I'm glade you like the series. I get quite a lot of science vs religion debates going, but I try avoid them in this venue.
is that stan lee?
yes
lyhthegreat lol
Oh wow. Beautifully explained. Thank you so much !
it was not Coppernicos,but Aryabhata hindu astronomer mathematician and inventor of zero who proposed the heliocentric model in year 500.
1000 years before europeans.
As mentioned, Aryabhata advocated an astronomical model in which the Earth turns on its own axis. His model also gave corrections (the śīgra anomaly) for the speeds of the planets in the sky in terms of the mean speed of the sun. Thus, it has been suggested that Aryabhata's calculations were based on an underlying heliocentric model, in which the planets orbit the Sun,[33][34][35] though this has been rebutted.[36] It has also been suggested that aspects of Aryabhata's system may have been derived from an earlier, likely pre-Ptolemaic Greek, heliocentric model of which Indian astronomers were unaware,[37] though the evidence is scant.[38] The general consensus is that a synodic anomaly (depending on the position of the sun) does not imply a physically heliocentric orbit (such corrections being also present in late Babylonian astronomical texts), and that Aryabhata's system was not explicitly heliocentric.
While a moving Earth was proposed at least from the 4th century BC in Pythagoreanism, and a fully developed heliocentric model was developed by Aristarchus of Samos in the 3rd century BC, these ideas were not successful in replacing the view of a static spherical Earth, and from the 2nd century AD the predominant model, which would be inherited by medieval astronomy, was the geocentric model described in Ptolemy's Almagest.
these are the next videos I've found in a long time! Simply awesome!
Wow! They're so very next! That's high praise, indeed!!
10:33 How is it possible that one person with just one pencil (or feather) and a piece of paper in his hand can calculate this??? I feel myself so stupid :-(
And they had to use charts/table/slide ruler for COS TAN and SIN instead of nice calculators we have today... same with any logs they had to do.
Gustavo Weckesser Well, people are aggressively losing their intelligence with each new generation.
I agree and include myself among them
They can't, they're guessing. Pull a number out of your ass and say it's true. Nonsense.
Beautiful series, just wonderful to watch and try understanding. Wonderful explanations and graphics - thank you so very much!
Thank you for using English measurements!!
Horrible thinking, it will die by force, it's absurd.Like driving by the left and so on. Pathetic.
Thanks.
"Correcting" him about Copernicus you just sound like some one who want people to think they are smart. Just because you looked up some fringe information from other cultures doesn't change anything. I'm sure many people had the independent "idea" that the earth or the sun was the center of the universe. It is what anyone would infer from observation. Copernicus WAS the first the create the mathematical model and make it work. Even though he was wrong. Focus on the science sir. Not trivia.
Burn!
Just kidding. Excellent work Mr Butler. Cheers!
+Early Theodore Ritter Copernicus did not create a workable model. He retained the deferents and epicycles of Ptolemy. It was KEPLER who created the first workable model. Learn some history, sir. Not whatever you said.
+Jim Abraham
Copernicus was the first to put the sun at the center. I did not say his model was correct. I said he was the first and it did work just not correctly. I said in my post he was wrong so where is my history incorrect? To make a statement that I need to learn some history is just rude and inflammatory. I would be happy to discuss it with you, however the concept of friendly debate seems to escape your thinking. His theory was radically different than Ptolemy. Ptolemy's model was NOT heliocentric. Kepler was a lot later and worked out the laws of planetary motion. Kepler did not come up with the heliocentric theory. If I am wrong about Copernicus, please educate me on what Copernicus did then? And while you are at it correct the following websites too. They desperately need your help! Good day, sir.
scienceworld.wolfram.com/biography/Copernicus.html
kepler.nasa.gov/Mission/JohannesKepler/#anchor784359
en.wikipedia.org/wiki/Nicolaus_Copernicus
Early Theodore Ritter All I said was that I think Copernicus is OVERRATED. Not that he was not the first to publish the idea of heliocentrism. You understand, don't you, that Copernicus, in his model, puts the sun central, so props for that, but otherwise DOES NOT CHANGE the Ptolemaic system?
Do you understand that Copernicus DID NOT provide a WORKING model of the solar system? Whereas Kepler DID. That's all I'm saying, is that in my opinion, it should be called the Galilean/Keplerian/Newtonian revolution, not the Copernican revolution. That's all I'm saying. Not taking anything away from Copernicus. Only recognizing that the idea had occurred to many people, and that being the first in print with "sun's in the middle" is hardly worthy of the same esteem as the accomplishments of Galileo, Kepler, Newton. Galileo have us inertia, Kepler the laws of planetary motion AND elliptical orbits, Newton the foundation for it all. Copernicus just put the sun in the middle, which many had speculated before him. The revolutionary ideas were not Cs, but the other guys.
That's all. Take a pill and calm down. What I'm saying is hardly, um, "revolutionary."
What a terrific, terrific video. I've been trying to explain a lot of this stuff (to flat earthers), but never so well and so clearly. Excellent job.
anyone looking for 'the earth is flat' comment!
Thankfully they seem to be fewer and fewer. I guess they found the edge finally and.... fell off!
i think they are fewer here because this is an obscure science video and he doesn't have many subscribers. I sadly admit I was looking around, hoping not to find too many :)
It was just a phase of idiocracy we're going through. They've moved on to thinking water is bad... and well, they're dead.
Thank you. Learning a great deal with your videos.
Can you use SI units thats better
+Fasal Rahman KP Yes. I added SI units via annotations. All updates will use SI units.
+David Butler thanks your fast reply
+Fasal Rahman KP Yes, I think that it is important to use SI. In fact, we in science should start using ONLY SI, and abandon completely English traditional weights and measures. Let the stupids have their miles and please, let the rest of us use ONLY SI. :)
I understand. SI is added via annotations. Plus only SI is used in "How small is it" and "How fast is it".
How small and How fast use only SI? Good deal!
These videos are superb - well reasoned and presented. Just one suggestion: could you leave the captions up a bit longer, my slow brain finds it hard to take everything in in the time provided. Thanks!
9:01
Thank you David for making all this very clear in video form. Amazing history and scientific research all in video form. Keep up the great work!
Yeshua is who holds everything together. That is the truth.
Really ... I mean ... really - is that like, your opinion or is that a proven fact? Because if it is the former, you are actually entitled to it, however wrong, idiotic, uninformed, narrow minded, shallow or stupid it might be - but if is is not the latter .... well - then you have not advanced the human race at all ... not in the slightest - you have then actually moved all of us back in knowledge, insight and understanding - and that's no help now is it?
You will be okay. Read the bible my Brother and it is all there. Yeshua who is God came to the world over 2000 years ago as a human. So, yes it is a fact Yeshua holds everything together. Some people like yourself have a hard time seeing truth because they are part of this world and it's system. Know him, know truth.
you're pathetic
It is okay to be an online troll at least you are getting the truth about Yeshua the true living God. He loves you and everyone.
Fear not my friend fore GoD is great
I do enjoy all of your videos .you are obviously very bright.i hope you continue to do videos in other areas of astronomy
Doesn't he sounds like the perv old man in Family Guy? Big respect for this video anyway;)
Awesome Video! Hope to see more of them. Love to learn about this stuff.
Holy Quran says, all celestial object goes on their orbit including the sun but people said that sun does not have an orbit and stationary but as time goes by, it has been discovered indeed sun also have an orbit goes around the galaxy.
Rizwan Rafeek it does not matter what the Quran says
+Get outta here!
Quran also says, universe is expanding and all living things came from water.
Space and matter were joined to gather as one unit, it was a split of asunder everything came from (which sounds very much like Big-bang.)
You are right, it does not matter what Quran says.
Rizwan Rafeek first of all it does not matter what the Quran says. Secondly it does not say what you claim. You take the arabic passagea and twist the meaning to sucker in followers. I read the Quran. It does NOT say the universe is expanding.
It says the universe was made from smoke. Which is false
+Get outta here!
_"It says the universe was made from smoke. Which is false "_
Particular verse you are referring to, addresses how the our milk-way came about, our galaxy might have been in state like smoke (primordial gas) which is what Quran reference as smoke.
_"I read the Quran. It does NOT say the universe is expanding. "_
I actually read it, with many different translation, they are all saying the same thing, in different ways.
Translator Sahih International Quran 51-47 And the heaven We constructed with strength, and indeed, We are *its expander* .
Translator Pickthall Quran 51-47 We have built the heaven with might, and *We it is Who make the vast extent (thereof)* .
Translator Yusuf Ali Quran 51-47 With power and skill did We construct the Firmament: for it is *We Who create the vastness of pace* .
Translator Shakir Quran 51-47 And the heaven, We raised it high with power, and most surely *We are the makers of things ample* .
Translator Muhammad Sarwar Quran 51-47 We have made the heavens with Our own hands and *We expanded it* .
Translator Mohsin Khan Quran 51-47 With power did We construct the heaven. Verily, *We are Able to extend the vastness of space thereof* .
Translator Arberry Quran 51-47 And heaven -- We built it with might, and *We extend it wide* .
None of that shows the Quran is some kind of science guide. You can talk about "extend" and "expanse" all day long. The context is nothing regarding the expansion of the universe, but merely making a point that yes, even in those days people understood that beyond the firm earth is an infinite heavens. The expanse is mentioned in the Bible in Genesis 1:1 "In the beginning god made heavnes and the earth. The earth was a void and the face of god hovered over the face of the waters of the abyss. You use the word "expanse" to refer to the "heavens" and "the firmament" . No, your Quran does not tell us anything that either wasn't speculated already or already discovered before 615AD
IN addition, most of these kind of concepts were 1. In the Christian Bible FIRST. 2. In Greek cosmology Second. 3. In Earlier Egyptian mythology third.
The Quran did not discover these concepts, but copied them. From The Bible book of Job 9:8 "Who alone stretched out the heavens..."
Split apart - Revelations 6:14
www.iflscience.com/space/ancient-egyptians-knew-about-distant-flashing-star-3000-years-earlier-thought/
Wonderful series of videos!!! The graphics, the music, the explanations and the narrator's voice create an experience that feels like an elegant evening with sophisticated friends.
yes, it it makes a pleasant change from the vast majority of you tube offerings, especially in the comments section. although there is a hint of of willful ignorance here and there...
Anyone getting a Heavens Gate vibe?
How come? This is about whats being observed not about ideas.
Great video! Thanks for sharing your knowledge
Notice how NASA can figure out what's going around Uranus; yet can't resolve the hunger problems, poverty, and massive Warfare on Earth. What if I told you, Uranus is the center of your universe?
Notice also how total idiots are trying to prove their point by making clueless assumptions, and yet, they can't understand simple mathematics.
max5250 he absolutely has a point. Which doesn't exclude your argument...(without the insult part of course). Here is a thought: what if, just what if hunger, warfare, human life, are way more complex math equations than any mathematician is capable of conceiving (for now)? My point is when it comes to knowledge, beyond the limitations of our own conditions, any statement can lead to better, deaper, higher understanding. Math is one of the tools, imagination another as Einstein himself stated.
@@FromTheHeart2
He has no point at all, since he is mixing science and space exploration with things that are not related (natural science with social science).
We already know that predicting events in social science is far more difficult than predicting events in natural sciences, because social science is mor complicated because it depends on much more variables that are difficult to observe, measure or predict its values.
When we speak about the knowledge, it is not true that any statement can lead to better understanding, because, if was true, any idiot could contribute to science, but that never happened.
In order to get deeper and higher understanding, you first need to understand current knowledge, and find something new that explains observable events better then current knowledge.
Imagination sure does help us much, but first we have to understand previous knowledge to acquire some new one.
max5250 everything is related and intricately intertwined, especially when it deals with the Sun. Every human being is the center of their universe. Your source of wealth including food is as vast as the universe. The Bible clearly tells you, the Lord was the Alpha and Omega the beginning and the end The Offspring of David the Bright Morning Star.
Notice it says, Bright Morning Star. It does not say bright yearly star.
Also note, that history is part, of social science. Galileo and Isaac Newton we're all part of History and social science, which shaped our economy and way of thinking. I say this with Dynamism, they were hypnotist.
Global warming means, the Earth is supplying more farmland. We are about to go to War World War 3 over food. The biggest lie today is there is not enough food to feed the world. Go figure🤔
The Great Eclipse of Aug. 21 2017.
Sign of the end times. Life Blocked out.
Future blocked! California fires, Las Vegas shootings, tsunamis, hurricanes earthquakes.
All life comes from the sun. Food comes from God.
To misquote the Sun is to misquote your future.
I have proof that this drawing, in this video is nothing more than a hoax. An instrument to prove superiority, of knowledge.
If you took the time out to actually look at the solar system yourself, you would see that there are days when the moon is gigantic and 1 day later; it is half the size. This obviously was not caused, by an orbit change. The same goes for the Sun.
The Earth, the Sun and the Moon are a living things. They are the most important Trinity that you will ever know. The Sun goes around the Earth every day. The Sun goes around the Moon every day, if you were on the moon ( which = 30 earth days)
It takes 29 days for the time relativity, time change. Just as it is 3 hours from the East Coast to the West Coast.
Each month or moon 30, days × 12 = 360
Which is a perfect circle. The Earth the Sun and the Moon are perfect circles. Your eyeball is the only other Perfect Circle.
God Made You In His Image. 😊
Galileo and the people of the fake moon landing are liars. Math can never be correct if your variables are incorrect.
Our society which is social science wants you to believe that months's have 28 days or 29 days or 31 days or 30 days. This is deception! Moving the clock up and down is also another means of deception. That is what makes up the extra 5 days, making it apear to being 365 days a year.
Nevertheless most people are happy with this unprovable drawing. That is the real reason why you have starvation War and poverty in the world. And needless to say Godless people; who fail to see, how beautiful they really are and that they are the center of their own universe.
Zoheyra Bent BoRouis please view update. Intended for you to read by Michael Whitfield.
Thank you for the informative video books , truly appreciate these.
international units please (kilogram, meter,second)
Go to 4k update for si unites: ruclips.net/video/bcn0ycIHKog/видео.html
True, Americans think only Americans watch youtube videos
Let's not be rude Nipun :) they did get to the moon before everyone else, and this is an excellent educational video
Deal with it
How hard is it to estimate 60% of a value and add that to the original value. If you are seriously interested in astronomics you should know the basic numbers yourself already. Avg distance to moon = 384k km, 4k km in diameter.
This guy is so badass he can walk on the surface of Mars wearing a black coat, scarf and a cowboy hat. Well done !
Free Tibet
Free cocain
Thanks David,well done mate :)
Thank you Dave Butler,, Great Video..
What a truly excellent video - so humbly and gracefully presented with fantastic and easy to understand illustrations. If you had been a teacher at my school I would have been queing at your door eager for the next lesson. Thanks for sharing your expertise in this way.
This makes the works of God in creation all the more remarkable. He asks of us that we love one another. A better use of our efforts I would suggest than fuss about the universe- simply give thanks for the wonder of it all.
These are a superbly edited and presented series of documentaries, the perfect balance of level and explanation. I'm fairly advanced in this area but the summaries here have added measurable background information and clarified facts, thank you very much.
You're very welcome Andrew. Thanks for the comment. Have you seen the 2017 update?
I have just watched it, am progressively working my way through all.
Do you have this set available for sale in HD / on DVD? As a gift for either my 77 year old father, (a life-long amateur), a 16 year old son (looking for somewhere to focus mental energy) or my 24 year old PhD daughter (who is in at least this way a chip off the old block), they would be considered by all a bargain.
I really cannot recommend this series enough, thoroughly enjoyable; presentable to audiences from near beginners or just more information and examples to serious amateurs, it's the best out there by a margin.
I'd just like to point out to others reading this that I consider myself a low end semi-expert, I was a guest evening lecturer on deep space a a significant college in England, and have tested my own calculations for distances, magnitudes and Supernova masses etc. but still many points are clarified by this series - the best I've seen.
Thank you again,
I did put them all on a blue-ray disk, but it was just for my children and grandchildren. Nothing I do in this arena is for sale. Thanks for asking. I love your note.
Excellent voice Quality and way of explaining
wow. Nice animation with geometry.
This was great !!! i loved how you kept it simple !!! :D keep it up mate !
Great video. Awesome work.
This is one of his presentations that I greatly appreciate.