Chang'e 4 Lunar Landing In Detail
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- Опубликовано: 10 окт 2024
- I took the best video from an official source, then corrected it for real time, interpolated frames to smooth it using butterflow. Then using the high quality video I try to map through all the features we see to provide an idea of how large the craters are.
Lunar images are from the Lunar Reconnaissance Orbiter wms.lroc.asu.edu
OMG the quality of that video is just amazing !
That's the difference between digital and analog:) analog video "decays" when it's processed, transmitted etc. Digital video doesn't.
"Haw awesome is dat, frieeend"
modern technology for the win!
Looks exactly as '69 pics. Well there is that 50 years thing.
The Exoplanets Channel v
What a time to be alive, again.
Hey there jesus
Whoa, what's up man?)
How's yoyr kid doing?
Umm Jesus, I've checked the scriptures and I don't think RUclips was part of the plan. Maybe I missed something, so I'm up for some direction. But I think Karen really got things off track and the rest of the world is suffering because of it. Maybe you can take your final form and rid the earth of its wickedness? That would be great. In your name, Amen.
Well Jesus have you got enough reason to burn this world yet?
@Pacem Terris to be fair, his parents named him that. We weren't all lucky enough to have cool parents who would name us Pacem Terris. And have you heard what Karen has done to the guy? Pray for Jesus, this guy anyway.
Huawei: we just got banned by the US gov.
CNSA: hold my beer. We are banned since 40 years ago.
True, we CNSA has been banned for many years
Banned since 1949.
I so appreciate seeing the righthand context maps, it really gives a sense of connectedness. Kudos.
Doxie Lain I think it was LRO NAC imagery (do a search for LRO quick map). The Chinese footage matched up with it perfectly, and the LRO NAC images show the LM descent stages, rovers, deployed experiments and trodden paths from the Apollo missions
Lol, the word "connectedness" gave me a flashback from math classes
Ah that was so cool thank you Mr. Manley.
A great example of how to communicate science to the public.
Most people think Interpolation is international crime fighting...
That is an amazing video! Thanks for the effort you put into this Scott!
@Astrum with the privilege of being able to watch both your and Scott's *fantastic* videos, I'm *very* *satisfied* and spoiled with my aerospace and astronomy science video selection on RUclips! Keep up the amazing work, both of you! :)
@@metanumia Pee poo poopppey pee
"The space probe is moving south across the Mün"
Scott, this isn't KSP this time ;-)
The Altitude is so deceiving. Very hard to judge distance with nothing to reference.
We are indeed lacking most depth cues here
radar altimeter
KSP says look for that shadow.
@@roku_nine We're talking visually to us viewers, of course they're not just judging visually
Like flying over the ocean or flat ice and snow. It all looks the same until you hit the surface.
Thanks Scott! That paired very nicely with my morning coffee.
Hahah, reading this while sipping my morning coffee.
Haha! It's just entertainment for you.
Notice how identical the landing video at the beginning is (except better quality) compared with the original Apollo pictures! No stars because of the contrast, similar coloration, etc. Also, later, the exhaust effects compare well and the “footprint” trail the rover makes at the very end. Another piece of evidence for the “been there, done that” books!
Glad to see we’re researching the Moon some more.
There should have been a number of colonies on the Moon by now that rival the size of the research centers in Antarctica.
@@bryanskscion2229 Not enough funding and investment for such projects. It was always the main barrier. The sad fact is that the US military has SEVEN times the budget of the entire Apollo program every single year (inflation adjusted).
JetStream90
Agreed. Of course, the conspiracy freaks will just fold this historic landing into their narrative, because they are not bound by any rules of logic or evidence. Similarities with 50 year-old Apollo video? No problem, it’s just because all governments secretly work together to fool and enslave their sheep. Problem solved, it’s still all fake. 🙄
Chang'e, the moon goddess in ancient Chinese mythology, is bringing peace and beauty to the world
we also need the moon toad and rabbit
Ancient mythology (and Junko) disagrees with that, Chang'e is a horrible person
@@lucascoelho3171 can u tell me a bit more?
@@lucascoelho3171 Chang'e is not horrible person ,she is goddess in moon
Ah Chang'e the maginificent, Chang'e the tragic. She is simultaneously a self made goddess and an overly ambitious wife trapped in self wrought exile. Her greatness is shared and appreciated by all that came after, yet her regret and tears are all her own.
0:27 so an average KSP session for me.
Stormhawk 427 you just made my day thank you!
I should shay, that probe didn't even do the suicide burn properly. Landed like an amateur.
I was expecting landing gear explosions, I was disappointed
Explosions are in between frames, we hear them but can't see them
Sounds like you haven't installed enough mods. 5 FPS is where it's at.
5:29.... very disorientating... could be 100 km away but now actually almost on surface. Wow!
Yep, none of the usual stuff like trees and buildings to get a sense of scale.
Weird, I had the opposite illusion. The fast descent early on made me think the surface was much closer than it was.
@@drewmandan Yeah, it almost looks like a model, but that's what happens with no atmosphere and fractal terrain.
@@massimookissed1023 Some of it is also the flat lighting makes it hard to see depth, especially with the reflectivity of the material. Along with no atmosphere for light dispersion.
It really is, my brain cant see the craters, instead i see Hills. I have to manually convince my brain that the shadows aren't being casted on hillsides, but instead in indentations in the ground. Pretty freeky.
Nice guide to the landing, big accomplishment for China
Really good, well done China.
im chinese and i did nothing xDDDD
LondonSpade thank you
China in 2020 covid 19 : am i a joke to you
Thanks for the altitude perspective; I've flown light aircraft since the early '90's. The utter clarity due to lack of atmosphere is _extremely_ disorienting... when you mentioned a couple of the craters were 1~2 kilometers across I had to re-adjust my vision to realize those weren't maybe 50 meters or so! Excellent work on this, Scott!
Scott, honestly your contribution to this community is very much underappreciated and under-recognised. You do such a great job!
100km above: looks the same
100cm above: still looks the same
I really can't tell..
Absolutely astonishing, an amazing achievement and fantastic footage with great details.
Hopefully we see people around these sites in a few years to extend the research and exploration.
Great video! Thanks for all the effort that went into the editing of the video.
I like the logo of the chinese space agency. It's so starfleetesque.
a congratulations is always in order for any achievement such as this. Will be interesting to hear if they're willing to share all or most of their findings with the world.
Pretty sure China will want to show off all the data they get since it makes them look good.
It's an international project. Much of the science, including some of the stuff onboard, was contributed to by other nations around the world. I'm sure the results will be widely publicized.
Today China's space agency announced ：Chang'e-5 will be launched at the end of 2019 .Lunar sample collection,and return.
2020 Explore Mars .
fake
Shi Thomason Official announcement
@@shithomason3765 so is ur comment
CZ-5(Long March - 5) rocket is a big trouble.
@@iebulex1925 How? It does launch payloads to orbit successfully, and it's cost effective to keep the CNSA doing more projects.
This shows how insane was the skill that astronauts had 50 years ago to land the LEM.
Yes! Totally manual at that time. It must be so proud as a space pilot. Lol
Well, if Apollo 11 had been unmanned it would have crashed.
Well done tracking down its exact location!
Hey Scott Manley! I could help in with Chinese content ( native Chinese reader)
我不会中文
@@joops110 = "I can not speak Chinese"
会来看的都听得懂的吧。。。。
@@unitheg6839 語法不是很難，但寫作是！
让老外体验下没有字幕的痛苦
Amazing work,it help a lot of peoples to understand the landing more easily.
OK WOW!! The first 2 minutes of this video is insane! That's mind-blowing that you can take the images from the moon and pin point exactly where the spacecraft is!!! THAT's AWESOME!!!
The descent video is so cool.. Mun fractals :D
It's just craters all the way down to basically the size of a small coin :P
I was getting slightly annoyed since I was trying to find where the lander was going to land, but there were craters everywhere.
It's RSS so it is Moon
The descent video is decent.
I thought the same exact thing when I watched it for the first time. There are so many craters on the moon of so many different sizes that it looked like a fractal infinite loop as if it was just going to keep descending forever and never land!
Thanks Scott! You made this fun/interesting to follow along. I've learned a great deal from you.
I find it a little humorous that RUclips's algorithm has identified the video as an Apollo mission video and linked the Encyclopedia Britannica entry.
I genuinely felt happy that China didn't just give up after the Jade Rabbit failure. Nice to see them back on the moon and with full success this time. It's super important that somebody does this sort of mission because it could lay the groundwork for some serious leaps in astronomy.
The Rabbit Rover didn't fail. Just end its lifespan.
the fractal quality of the impacts is amazing!
Go China! let’s start a new space era pleaaaaseeeee
@Carlos Saraiva You oversimplify things. Can't speak for USA, but in Russia the space industry is bloated due to size it has in Soviet era; huge factories, large research institutes, and nobody has a political will to shrink them to a more efficient size - that would mean laying off too many people, bad optics. There is a process of merging and optimizing, but it would take another decade at least. So no, the problem is not idiots, the problem is the economy.
@Carlos Saraiva Well India and later Brazil (Mercosur?) will take the torch too.
@@user-zv8qg1co4z I don't think they have all that much communism left. Single-party authoritarian, and to a large part, capitalist economy. They've got lots of billionaires these days. International Chinese investments all over the planet.
@@user-zv8qg1co4z China is not a communist regime. It stopped being a long time ago.
@@user-zv8qg1co4z lol indeed, China has to be the most aggressively capitalist country on Earth at the moment.
What a nice piece of tech! Hovering while scanning the surface..nice one.
Fantastic video, great commentary. That footage is unreal.
Wow. I'm impressed at the work that went into providing this level of detail. Thank you.
Omg I couldnt stop seeing the craters as hills.. I tried everything, like watching upside down or restarting the video. Damn
I had the same problem. Always do when I look at moon shots, even detailed ones. The video from the Chang was only shooting at 10 frames per second so there wasn't a whole lot of detail like the hi-res photographs on the right.
I have the same issue....
Ctrl-Alt-Down Arrow (or maybe up arrow, I forgot); doens't work on all graphics cards though.
Its exactly that, left side are showing hills from the start till the landing. Only youre indoctrinated by NASA brains and the video voice-over tells you i must see craters, i must see craters cause the right side picture shows you that. Nothing more.
@@aaldertsteffens4633 >>> Huh?
Excellent explanation and side by side view, was really interesting. A great achievement for China. It definitely appeared the craft was in autonomous mode at the final stages of landing, ie nobody was directing it from earth.
I feel we should be giving China a big thank you for putting the moon back on the map. It’s been a long time since 1969.
Excellent work sir! This is hands down the best coverage of this landing.
In the video it only took 2.5 minutes to decelerate! From orbital velocity, how many G's did it pull decelerating?
7500N of thrust meant it was less than 1 g the whole time.
@@scottmanley I'm missing a 1000 m/s. Could you help me find where and/or how I've missed placed them?
Using your mentioned 1 g (est. 10 m/s/s) and 2,5 minutes (150 s) adds up to 1500 m/s. The Moon's escape velocity is approx. 2500 m/s (what I assume is the orbital velocity refered to). This minus the 1500 m/s of (de)acceleration, leaves my missing m/s to be accounted for.
*Bo* You're part of the reason that Scott Manley videos have the best conversations! Orbital velocity is much less than escape velocity. For instance, in reference to Earth, orbital velocity is 17,500 mph, but escape velocity is over 25,000 miles per hour. Now convert all that to metric, recalculate for the mass of the moon and you'll get your answer, I bet.
Of course the other part of the answer is the unknown deceleration maneuvers previous to the burn we timed in this video. Perhaps it was suborbital before the burn in the video.
Sounds like someone is confused by hollwood.
I remember watching Armageddon and facepalmed when they talked about pulling 9g around the moon. It only pulls with about 1/6th of a G. So by going faster they would simply have escaped into space.
@RockinRobbins13 So the escape velocity is the m/s needed to be "uhmphf:ed", to obtain an orbit? Not the actual velocity of the 'whatever' sent up, when orbit is reached. IC. Thanks! Wait...
Is escape velocity perhaps that which is needed to leave the local gravity field? Not just to achive orbit. That would account for my missing m/s.
Great content! I just started reading Rebecca Boyle’s book ‘Our Moon..’ and in the first chapter she mentions this flight and it’s approached to the lunar surface so I just had to find a video and yours is the best. I’m just learning about the details of this magnificent planet. Keep up the good work..
Next challenge: Create the Chang'e 4 lander in KSP and land it on the far side WITH a rover
that's quite easy
The only issue is that Stock won't let you keep a relay at L2.
@@MarvinCZ I wouldn't have thought you'd need any extra provisions to make that work, it ought to fall out from the simulated gravity? That' hpw it works in real life.
@@KaiHenningsen In real life, the Earth-Moon Lagrangian points work due to the combined forces from Earth and Moon.
In Stock KSP, you are only ever affected by one celestial body at one time so L-points are impossible. You can orbit one body or the other, that's it.
You need n-body physics for this to work. There is a mod for that - Principia.
@@MarvinCZ Has that mod been keeping up to date?
I’m just amazed at the amount of content you are putting out while maintaining quality on a broad range of topics. Well done.
Interesting, to me at least, I have to command my brain to "see" craters which often appear to be hills.
Thanks for the motion-interpolated real-time version. It's interesting to note the slight wobble likely due to propellant slosh during the early phase of descent, something that wasn't noticeable on Chang'e 3.
Pronounced (as the best approximation in English): "Chahng uh" (with rising tones on each syllable) 嫦娥工程; pinyin: Cháng'é Gōngchéng or Chang'e Project. The apostrophe is used to distinguish it from "chan'ge", which is also possible in pinyin (or the standard Romanization used in the PRC for Mandarin). The pronunciation used in the video would be wriitten: chang'i (which isn't a possible pronunciation in Mandarin... the closest actual pronunciation using actual Mandarin syllables being "changyi"). I am an English speaker living and working in China and learning Mandarin. Hope this helps.
do you also correct Chinese who are not your students when they say Rhode Island ?
Very nice work! Congrats from the light side of the moon.
The engine will not shut down until it is 100% confirmed that they are happy with the landing. While you having it going, then it is easy enough just to take off again and then move forwards or backwards.
They could really do that?
Nice!
Once safely down you would not lift off again.
I'd guess that you don't want to leave a partially fueled bomb on the surface, better to dump the fuel through the engine...
I swear it gets me every time, even when it's landed it looks like it could still be high up.
Glad to see we are doing moon stuff again.
That was very well done, Scott. I like how you matched up the stream from the probe with the features on the the map of the far side to show the progress of the landing and to pinpoint its location.
It would be nice if someone could do something similar with Mars probes, although the fact that those can't roll cameras when sheathed in plasma makes that a lot harder.
I look forward to seeing how the biological experiments on the probe progress.
Anyone else saw the craters as mounds?
It's because the mind is programmed for light coming from above relative to the image.
I have that problem sometimes. I don't know why but I see the craters in reverse so that they look like mounds instead of craters. I have to really concentrate on the direction of the shadows and determine which way the Sun is hitting, then it snaps back to reality. I've always had that problem.
When I read this I started seeing them.Can't unsee
@@atomisedman6235 Never saw the craters. I think there is a Moon crater hoax.
Scott says he flipped the images to make side-by-side comparison easier, this turns shadows into mounds.
Very detailed description. It's very interesting to match the features of the the surface with the map. I often do that from an aeroplane window and Google maps.
These craters are like a fractal :^)
Fractoons!
you can tell an acid dj from afar)))))
Thanks for the very clear explanation of the Chang'e 4 landing accompanied by visuals
Watched from China
blabla62871 and NSA CIA FBI Five Eye allies are watching China back
blabla62871 haha
HO LAM YIU no it’s not
@Planes & Planes 飞机 isn't RUclips banned?
Thanks Scott, perfectly informative. What a triumph for humanity.
absolutely increadible..... top marks human race!!!
Love your videos Scott. Keep them coming. The detail you give in your content is amazing and you explain things so well. Easy watching.
I didn't know there was video of the descent; that was amazing!
And that was a fairly reasonable attempt at the pronunciation of Cháng'é (嫦娥). Although to be a bit pedantic, it's more like "cháng er".
to me, Scott only needs to work on the Err part of Chang e. Definitely a good attempt though
@@lugiarboy
Yes, he definitely made an effort. I wouldn't expect him to attempt the 2 rising tones... That might be too much to ask for! Everybody I've heard so far just says "chang E", i.e. the English letter E. It's so annoying! haha. Cheers.
I hope we'll never see Klingons in Scott videos' comments. What pronunciation demands they can make...
@@lugiarboy He can just say "chime uhh" and it would sound close enough I think? Well, at least nowadays people who don't speak Chinese stopped trying to pronounce it as "change yee" so that's a big step forward :)
A big step forward for Scott from trying 'korolev' and 'ultima thule' ))
That engine blast in the dust was cool to see in high-res for once!
I've been to the place in charge of this program in China
how?
Not xichang, but something in Beijing at a center where i assume where they planned it out and show it to their important people that have something to do with the missions. They were going to show us where they built them, but the chinese government cancelled the visit. That was in 2014 and I was 15 at the time. It was a program for high school students from both the us an china designed by a past chinese/American governor. He wanted to unite US and Chinese space exploration efforts. I dont think it did much
The landing footers and the thruster literally obliterated tiny craters that have been in the same state for Eons! I never thought about that before. Thanks, great video.
The tiny craters are relatively recent, compared to the large ones. They tend to be obliterated every time there is another meteor impact nearby.
@@gordonrichardson2972 So they're only a couple hundred thousand years old? Well, at least we'll always have the photos.
I can't find reference data on crater ages, but that number seems about right. The number of craters exceeding 1km in diameter is estimated to be over 300,000 on the near side alone, so the number of small craters must be astronomical (pun intended). The thickness of dust/ruble/regolith is many kilometers thick. Quote from Wikipedia: A secondary cratering process caused by distal ejecta is thought to churn the top two centimetres of regolith a hundred times more quickly than previous models suggested - on a timescale of 81,000 years.
@@gordonrichardson2972 I can't help imagining all this information through the lens of a zoning board meeting pitting crater preservationists against lunar real estate developers.
Wow, this whole "Adjusting" and "hovering" really reminded me about how a drone flies. These very gentle, but precise and calculated movements... Straight up 21st centure technology. I mean, we are grown up enough now to send really small spacecraft, maybe even with hobby-grade cameras and controllers to other planets, and they can do a looot of useful stuff. I mean, instead of building a ten million dollar Mars lander, why don't we send a swarm of tiny drones with cameras? They will, like, fly around for an hour (easier to fly on Mars, low gravity), and then just sit there for another day recharging with tiny solar panels, they don't even have to be foldable. If some of them die, then OK, we've got the rest. They c an cover hundreds of kilometers over the surface, giving answers about Mars we need so much.
They might not fly on mars since it has a very thin atmosphere.
@@nebtheweb8885 I am pretty sure it is managable if you use really big propellers or just make the existing ones spin faster. Thinner atmosphere accounts for less resistance, so you just tweak the proportions. And, again, you need three times less thrust in the end.
The existing Mars crawlers are small enough, what's your problem with their size?
Their cost is not due to size, but due to a fact that they are sent far away, with corresponding requirements to quality. A swarm of drones would not cost less.
@@vladimirdyuzhev I just really want to some space exploration done with with a swarm of cheap, consumer-grade tech. We just had cubesats flying by Mars, and what I think is we should start really establishing our technological presence on other worlds. This chinese video really feels like home to me, because (even if i don't precisely know the code behind it) I know how drones behave, and I see similarities in the behavior of this spacecraft. Space shouldn't feel so out there, seeing familiar objects and concepts in it is the key to making more people excited by it, like it was in the 1960s. We have all these futuristic technologies here, but all the spacecraft are still mostly 1980s in their design and they are all very "serious" and "conservative", which makes them feel old. We have 1080p60 video here on Earth, and i think it's time to have it on the Moon. And this is the closest we can get now. I think only Hype Train can take us to Mars.
How are you going to maintain power to your drones?
Great job Scott - your work made it easy to follow the descent. And, as usual, your play-by-play narrative was insightful and bullshit-free. As someone who worked on an earlier interplanetary mission (Mars Observer), your videos are like getting postcards from old friends.
You straight up doxxed that probe :)
Let us go rob it when the rover isn't home.
Thanks Scott. That was a great bit of editing. So good to compare the lander view with the map. Such high quality images. Our modern control electronics are amazing. Just imagine Neil Armstrong did all those lander thruster controls manually- perhaps that is even more amazing than our electronics. Any fool with a few hundred dollars can land a drone with flick of a lever these days .
I am really looking foward to see what space activities we will see over the next decade or so. Seems like space exploring has come alive again at an accelerating space.
Amazing what gyroscopic stabilisation can do (re cheap drones).
It's craters all the way down.
our beautiful black and white moon
I wish had we lived on the moon so that there would be no Flat Earth conspiracies
Wait... that would create Flat Moon conspiracies!
That would be a lot harder given how much nearer the horizon is on the Moon, but that's not to say they wouldn't try...
Nah, then it would be “the Earth is flying around the moon and Jesus lives there...
D'OH!!!
@@EnglishMike The Earth would need at least ten times its diameter before one couldn't tell the Earth is round from their own backyard. Never underestimate the stupidity of an idiot.
then you would have Flat Moon Conspiracies ... conspiracies don't exist by themself, an idiot is required to think them.
That was a cool and excellent side by side comparison with old photos, nice work Scott
it's really difficult to tell distance with no atmosphere.
Without trees, you mean.
Just use laser then.
@@googleeatsdicks Atmosphere fading is not a good reference since atmosphere fog could be very near the ground on some cases.
Having well known sized reference points would be more useful. Plus, Far side of the Moon is not really well known by people since we never see it. For example Mars has some well known details like mount Olympus or Valles Marineris but seen only from very far.
On Earth, we would have cities and buildings for scale.
by laser radar.
One of the coolest videos I've seen in a while. Thank you Scott!!
Well done China 👍👍👍
That last bit of the video, actually cleared up an anomaly that we had when we were given the stills, that being a strange white bit to the left of the rover.
We can see that is the reflection of the underside of the solar panel
Stop with all the butt hurt over all the first comments. Every like and comment helps scott with his channels algorithms. If I watch, I comment, out of respect and support for the creator. Thanks and fly safe. :)
first commenting your comment!
@@vladimirdyuzhev Well played! Sir
Thanks for this. With main stream media they are more concentrated on other things then human accomplishments.
How are them Flat Mooners going to deny this?
That's a new group then, flattards say the moon is a hologram projected from the earth.
Great video Scott! I got the same feeling of zooming in a fractal the first time I saw the video! Amazing
Superb. Congratulations to China.
Thank you for putting together this amazing presentation. Fascinating!
all nations should work together to explore the outer space. i hope American can wake up and stop living in cold war.
That’s a great video Scott, now we know for sure where Change4 landed! 👍
guess people will claim this is fake too.
You mean it's NOT? 😜😜😜😜
i dunno im just a sheep :P @@Allan_aka_RocKITEman
Very nice video ! It's very difficult to get any sense of scale when watching the descent so it's good to have a running commentary of the sizes of various craters etc.
made in china
Very cool, and a significant accomplishment.
Jesus Christ, anyone else got anything else to say, other than 'first'? Ugh.
First
Cows say "moo", idiots say "first"...
@@owensparks5013 First.
second
Well shit.
Brilliant analysis! Well identified and tracked - thanks!
"First" is the first comment I saw here. ISN'T THERE ANYTHING ELSE YOU WANNA TALK ABOUT?
Okay. You spelled "isn't" wrong. :-)
I guess they really were the first
Anyone want to discuss signal to noise ratio?
@@my3dviews lol yeah
Report them for spam.
This one was just awesome giving us a step by step analysis was very interesting.
*_Chang‘e.... nice spelling dude_*
That's literally what it is called. What's the problem?
That apostrophe is there to help people like you to not read it as 'change'.
It's not a typo or mispelling, it's the name of the craft. Remember it's chinese.
@@TehIdiotOne r/whooooosh
@András Ács ikr
Great to see these images and movie !
Thank you very much !
I'm a new subscriber to this channel and I'm a keen amateur astrophotographer. I would like to congratulate you on a superb channel! Great presentation skills, and great content!! Well well done and keep up the excellent standard.
Just imagine how cool it would be to remote control that rover compared to the ones on mars! With a roundtrip delay of only 2.54 seconds it would be very responsive compared to the ~30 minute roundtrip to mars!
Man I want ramps like that in KSP. It would make landing rovers just a joy.
Thanks for giving a perspective to the scale of things. At first it looks a bit as if the spacecraft was landing on a tiny little object, because you can not judge the size of things. From the video the moon could as well have a diameter of a 5 km, if you do not look closely. Such a weird impression...