Asteroid Smashing Looks Like Nothing You Ever Imagined
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- Опубликовано: 26 сен 2022
- NASA's Double Asteroid Redirect Test (DART) mission finished yesterday in a spectacular crash into the Asteroid Dimorphos
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Наука
Scott: "Fly Safe"
DART: No, No I Don't Think I Will
Darkwing Duck: "Let's get _dangerous!"_
in this case it is pretty much a flying "safe "
Legend says those were the final words of the pilot of The Cornfield Bomber (a Dart of another kind) before he ejected.
@@nuclearmedicineman6270 Ok Ill admit I like this comment :D
@@nuclearmedicineman6270 Had to look that up. Heckuva story.
I worked the alignment team on DART doing all the pre/post metrology for the environmental testing. This one is definitely going on my resume.
Thats awesome!
Sir ,thank you for your efforts ,to help save us in the future !
You must be delighted with this result and very proud of your well done job.
I watched "Hidden figures" several times and saw all the mathematical problems . Let alone to leave earth and hit a small target at say 11million I'm, in a 4 body , curved trajectory ambient . Good you put this comment here Sir, we take those aspects always for granted. Kind regards
That's cool! What was your job title?
@@oskrm Future Hero of Earth
I find fluid dynamics in near-vacuum (for example, the DART impact, the Starfish Prime test, and high-altitude rocket plumes) eerily beautiful.
Fluid dynamics in a vacuum, it’s aerosolizes to a spread, doesn’t look like what they showed you. They showed you resistance and a pressure waive. Can’t have that in a vacuum….
@@9greatdanes981 Hmm... This implies that the finer dust ejected first acted as a sort of atmosphere. It might even be possible that the dust was so hot from energy transfer that it was vaporizing as it was ejected, meaning that the trails we see of the larger debris was indeed traveling through a cloud of gas. Scott Manly is right... We're seeing some really fascinating things from this that we never even thought of.
@@venbrou The title of the video and your own last sentence implies something much more important, or darker even, as I see it: that the whole fundamental premise of this gravity based paradigm, is not just wrong, but in a way almost the opposite of what's really going on in space.
The pressure wave and/or "sort of atmosphere" you guys mentioned, are probably just electric/plasma effects.
I'm guessing there was a lot more 'fireworks' going on with that crash, than expected?
This has happened before too, with Comet 67P, at which NASA shot a projectile to measure the dust and supposed water vapor.
It barely made a dent, because comets are NOT accreted ice and dust ball, but solid rock. And the coma and tail are electrical discharge from being negatively charged and entering the sun's positively charged 'atmosphere'.
Spoiler: the universe is electric in nature - as above, so below, goes two ways. When here on earth everything runs on electric current/potential differentials, from our gadgets/machines to you reading this and me typing it, it prolly does so up there too.
Now I'm going to watch the video to have my prediction confirmed. You know, how one tests his/her hypothesis.
See what I did there?
@@venbrou 7:35 looks nothing like an electric discharge or anything, right?
lol!
@@philosophicaltool5469 I was originally speculating on the hypothesis of the debris traveling through some kind of gaseous medium. But the thought of electrical charge differentials causing the unexpected turbulence we see does seem more probable. After all... It's theorized that stellar and planetary accretion is driven by electrostatic attraction prior to the "chunks" having sufficient gravitation pull.
as a more casual fan of space missions my first thought when you mentioned that they were crashing the cubesat into it was "isn't that gonna change it's orbit?" only to realize later on in the video that yes, it will because that was the whole point of the mission! so cool!
The CubeSat (LICIACube) flew by and survived, because its goal was to take photos of the plume. DART was much bigger than a CubeSat. If you look at some DART assembly photos, you'll see a box mounted at a funny angle on one side-that's the 6U CubeSat dispenser. (Both of these spacecraft have Wikipedia articles, BTW!)
@@IDoNotLikeHandlesOnYT so cool! thanks!
„The difference between science and messing around by blowing up asteroids is - writing it down“ Hilarious! Once again Scott at his best! 😂
He's quoting Mythbusters there, except the bit about asteroids.
Adam Savage quotes are the best!
Science in a nutshell lmao
I wonder how many authors will be on the paper!
Well, there's your problem.
One conclusion is obvious already: Dimorphos doesn't have an Impactor Defense System.
The Dimorphosians will be regretting that budget cut right now
Lol
DIMORPHOSIAN: "Give me liberty or give me......oh crap!!!"
you guys made my day!
I thought l could perhaps just discern The Little Prince throwing a stone upwards in one of the frames but then l cleaned my screen and thankfully he went away.
To think this all started when Andy Cheng had a 'light-bulb moment' when exercising one morning (chief scientist for planetary defense at the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland). From thought to conception and a very successful one at that. Andy must be feeling very proud of the team that helped design a test that could potentially save the planet in the distant future. I hope it's a very distant future too. Looking forward to the results of the test in the next few weeks. Thanks Scott for the extra pictures.
Andy Cheng, WRONGLY claimed, this had never been done before, it had! On July 4, 2005, 17 years earlier, an 820 pound copper 'impactor', was crashed into comet Temple 1, in NASA's Deep Impact experiment.
@@petercarroll5874 Crashing a satellite into a celestial body has been done way back in 1959 when the Russians deliberately crashed the Luna 2 into the moon. It has been done many times. But this is the 1st time it has been done to see if there is an observable change of orbit on a 'Dual Asteroid'. The Temple 1 objective was to analyse the resulting debris, to study the composition of the ejected material. So sure, it has been done before, but the following satellites used in the analysis, were totally customised for different objectives.
The lead-navigator for DART is a french-canadian woman called Julie Bellerose. She recently did a bunch of interviews in french-canadian news outlets about this mission and her job. Fascinating stuff.
The view of the impact from earth gave me chills. Unbelievable.
Indeed. It looks similar to many celestial events/impacts that have been observed, but with the knowledge that 'we did that'.
I was more thinking of an accident about to occur filmed from a dash cam.
TERRA INVICTA
Trap shooting with rockets.
It was a hell of a shockwave.
i love how DART said "THIS IS FOR THE DINOSAURS" before he died. DART was a great soldier.
Salute 🖖
Colbert...
Dydimos right before impact was like: "bro... wtf? It was not me..."
Some days you're the dinosaur, other days you're the asteroid
Definitely one of his crazy relatives.... can't lump all asteroids in the same bucket. I'm sure some have good, icy watery cores, can't be just stone cold...
i worked on simulations for the ESA soho project when it launched, i also did a ton of animations around the oort cloud comets, various earth bound telescopes and (this was the late 80's) even visuals of colonising asteroids, not to mention i did a number of animations for the 1999/2000 BBC series "the planets". i've actually lost count of the number of times i've built a model of the solar system - so i've had to do a lot of visualisation. this is how i would imagine a small "moon" starting it's very early life, little pieces of rock just pulled together, not enough gravity at this point to crush anything, just enough gravity to squash the rocks compacting. fantastic bit of imagery and thanks for rehashing the frames!
No one ever
I have never been disappointed or bored with your videos. This one maintains your perfect score Scott!
The final minute or so was like watching universe sandbox zoom in on an object. I was also surprised how fast the images updated. I didn’t realize they had that high a data downlink
When you have basically the whole deep space network listening...
I mean they only had two dishes pointed at it, granted they were some of the biggest dishes they had 😂
his explanation of no craters makes no sense at all... so what physics doesn't apply at all anymore and the impactor just bounces off leaving no marks. It has no craters cause it hasn't been hit by anything...
@@Blazeww Sometimes he just says some thoughts that weren't fully baked. That's not a big deal considering what he gets right, but you're correct on this one, I think.
@@fatitankeris6327 I thought the implication was that there wasn't enough gravity to hold the shape of the crater. After an impact, it gradually reflows back to "normal". Like poking Silly Putty with your finger.
Thank you for not clickbaiting and showing the actual footage. This was amazing.
Scott never clickbaits. He's a proper astronomer, not a news outlet. :V
@@RabblerouserGT Yes, we were pleasantly not surprised.
yes, scotty doesnt do clickbait. real science doesnt require clickbait techniques. science and tech is its own bait for real science buffs.
Stanley Kubrick would be very proud.
I watched the original impact live, but thank you for collecting all the follow-on video and bringing it together. I had not seen any of this. You put together a great and tight package of information. Honestly you are better than the news sites covering this event.
The plume seems to indicate the impact rang it pretty good. The plume being on one half says a lot about the shock wave propagation and it’s structure.
Beautiful. So satisfying to see this ambitious mission complete successfully. Major props to all involved.
@@veramae4098 lmao
It won't be known if it was a complete success until any orbit change is detected.
👆
@@cadelepski5161
I think the goal was to find out how much of an impact (pun intended) this spacecraft has on the orbit.
@@markkrutzmann6862 Yes. That's what I said.
Simply amazing that a telescope is able to see this.
A satellite was released before impact to take photos every 1 second of the event
@@grudzz7049 the cloud images are from ground scopes
@@KnowledgePerformance7 in fact we don’t see all that much from them. 😅
@@KnowledgePerformance7 oops thought we were talkin impact..
It is, but I'm even more awed by the fact that by taking a close look at a star's light, they can tell down to a few kilometers per hour how fast it's moving towards or away from us.
After watching the live coverage I was eager to see your synopsis with additional imagery. As always, you did not disappoint. Thank you!
Really nice work on putting together information from multiple sites and streams. Its quite incredible to watch.
I did not expect to get that detailed photos of the approach. This was so incredibly tense, eerie, and plain awesome!
Yeah the approach photos are awesome, but if they look so good, why do the photos from the cube sat look like something from 20 years ago. I was really looking forward to seeing the same amount of detail in the impact photos but they're just blurry messes.
I mean if you are close to an object, quality tends to improve. We have to look at scale in this one. There could have been a bunch of things that could have happened. Imagine DART missing the asteroid, then this could have helped to get it right next time. Basically they did not know how far is too far or how near is too near. The resulting pictures may have been zoomed in on to hell, because they wanted to get a good angle of the approach in addition to the collision
@@genedude6529 i'm guessing the onboard camera had a set focal length meant specifically to take photos of the asteroid up close so on approach, the asteroid wasn't really in focus or the images were tiny zoomed in sections of a full picture which means we lost a lot of detail
I'd prefer detailed images of the impact and aftermath from a trailing camera ship.
@@marcusalexander7088 Do it like Marcus wants boys. 😂🎉
I can always count on a Scott Manley video being right at the top when I need to know something about anything that just happened!!
Thank you for such a detailed coverage . the cube stats did an amazing job as well.
The dynamics of that ejecta is fascinating glad we got the cube sat to catch that as without that we would have lost so much intricate detail! Its a shame we only have one up close vantage point given the high asymmetry of the impact ejecta which means out models will likely be incomplete but that is still far better than none.
I would guess that boulder sized aggregations without the finer material causes the energy to proceed through the body in a chaotically non-uniform way. Kind of like poorly racked balls for the break on a pool table.
Licia Sat is still sending data it is very small so low data rate. So expect more pictures.
The ejecta would be of different sizes and shapes. Those with less mass would be able to acquire a great velocity. Some of it would hit the larger chunks and be deflect into different trajectories. The larger chunks would also spin randomly, sending the small material out in chaotic patterns.
Cubesats are shining rn. Marco-A/B for redundant telemetry and now they get that vantage point.
I guess this is why impact craters on airless worlds often have rays of ejecta around them.
god damn the photos from the ride along sat are incredible
I can't believe you get such a dramatic explosion from such a small satellite, it looks like something out of a movie
I'm impressed by the images from the DART itself. It makes the ride-along camera look like a potato.
You should see some explosion simulations in the Universe Sandbox. Even a baseball ball can enormously impact if the velocity is too much.
@@smuhlaci There's a difference between seeing something in a simulation and seeing it happen in real life
Besides, even the animations they made for this before it happened didnt have anything nearly this dramatic
just goes to show how much energy can be imparted by moving really really really fast
ever heard of the big bang theory? that created everything with something much much much much smaller
I watched this on the NASA live feed. Very cool! I was quite surprised to see the boulders like that, I was expecting to see some rocks covered in dust like a layer of gray snow on everything. This looked like a usual landscape on earth when doing some desert-hiking, amazing.
The images are just spectacular! DART was an absolute success and I'm so proud of all the people who work on these projects 👍 And great video, your explanations are always fantastic 🚀
This was so amazing. My brother watched that with his kids too, they were mindblown. I did not know they would have live image from it, I was not planning to watched originally, just watching people in a control room is a bit boring, but I tuned in anyway and was pleasantly surprise we ha live feed! it was the second coolest live feed after the perseverance landing!
the delay was in the 30s second , I think the asteroid being over 11 millions kms away. quite of a short delay.
Absolutely. I'm sitting on my LazyBoy, thinking, WoW, this is in near realtime! Meanwhile, the arsehats on the comment board for the channel I was watching, are calling it, 'fake'.
I also watched it live, but as spectacular as it was, I will be in suspense until Nasa tells us how much the DART impact changed Didimoon's trajectory and velocity. And the weight ratio between them.
Same here 👍
Detection is the key. If you detect an impactor years out, the smallest nudge will create a miss. The closer to impact and the heavier the impactor, the more unlikely it is to divert it. This is why long period comets are terrifying; solar system is surrounded by a hypothetical shell of icy bodies waiting their turn.
@@cheddar2648 Sure. But still I'd like to hear if and how much they succeeded in changing the orbit, out of curiosity.
But it's not always possible to predict (especially) long period comets' trajectories since they influence each other and are influenced also by the Solar wind and the pull from (some of) the planets.
So occasionally, an appraoching comet would have to get hit quite hard at a late point in time because it would hit Earth f.x. just half a year after a local impact sent it towards us.
Thanks for the raw images and video of it. That's what really drives my curiosity for space and physics. The raw data and images. Details should always be explained when sharing such success. I believe anyways... some youtubers only get the general idea out and use artists impressions for their topic...
Subbed and Im really looking forward to when new information comes out about this cause I'll be waiting for your next video.
Thanks for these really timely updates - with this video, and your recent Max Q Abort video, I feel like I'm learning about interesting things going on in space as they happen, and unlike a mainstream news report, these videos are all thriller, no filler.
As an earth-bound Engineer I find it incredible that NASA can zone in on that small target so far away. I wish I could get even close to that degree of accuracy.
Most people don't get that accurate reversing a car into a parking space.
I have yet to make a straight cut on a 2X4.
They have Ukrainians on the team.
Simple - they used a GPS. Loaded the POI and sent it on its way.
Like hitting a bullet, with another bullet, whilst riding a horse backwards. And you planned every little thing three years in advance with no ability to change procedure midway through. Absolutely incredible.
As always your presentation and conclusion are so amazing 👏 you give us the info without treating us like children. Thank you so much
Just like 'Some More News', but he does Politics and General-Problems (like Droughts
and the Prison-System) instead of Science.
What a superlative experiment (and brilliant conceptualization). Thank you for giving us greater insight.
I've been dying for an overview of this mission, and this is more than explained it. But WOW those images were so striking! Figuratively and literally. Incredible. My grandad would never believe it.
Your Grandad would have been correct
@@geniejack9709 His granddad might have been ignorant. You though.. you're just stupid. Ignorance, unlike stupidity, can be fixed.
Love the reference to 'Consider a Spherical Cow'. I had that text during my undergrad and have always found the title humorous as well as instructive.
I was very much looking forward to this impact, and your "Scott Manley" analysis. So glad it didn't turn out to be a puffball disintegration.
Very impressed with the cube sat image capture. The data transfer and image focusing of Dart was just amazing.
Again, looking forward to future "Scott Manley" analysis!
been waiting for this, THANKS
Great explanation and video pictures, thank you Scott. 😊
2:10 “there’s no craters on this body” - DART: “hold my beer 🍺” there is now! 😊
"The difference between science and messing around by blowing up asteroids is writing it down."
THANKS for this Mannly !
Fascinating stuff, thanks for the update, fly safe
I'm as equally impressed about ground based observations of the event. What a time to be alive, unless an actual dino-killer is heading our way.
Lol if there is a dino-killer heading out way, this is the only time to be alive
If a dino killer comes the most important question is what its made of because the solution to a rubble pile is very different than for a single unified hunk of iron or an icy comet.
I assume a commet is the easiest to deal with because we would just need mirrors and lasers to sublimate it away. (Possibly a nuke would be valid for ice melting duty, i know nukes generally only make an asteroid problem worse as it results in multiple large impactors that will all still hit the earth)
I believe the current best solution for asteroid redirection is the slow and steady approach of either orbiting or landing on it and push/pull it to a new trajectory with the probes thrusters, or use light/impactors to push it out of the way.
Ironically, the dinos are more likely to survive than us!
There are no large asteroids threatening the Earth for the foreseeable future. Although there could be comets headed our way that we don't know about yet. The odds of a comet hitting us is extremely low so I'm not too worried yet.
The biggest threat to humankind is man, one in particular at the moment
Watching spaceships millions of miles away in real time from my easy chair is...fabulous!
Don't know anything about you but I can tell by the way you talk that you really know your stuff. I really enjoyed your commentary and am subscribing. Keep it up!
Thank you, Scott!
Thanks once again, Scott - I don't know what we'd do without you.
I've been waiting for your breakdown since yesterday. Thank you!
I was excited for this mission when it was announced and like many others, waited patiently for it's journey these past several months.
There is a common misunderstanding about the frames from the Draco camera and the actual impact site. Those frames were subframes of a lager pixel array in order to increase transmission rates. Long story short DART definitely impacted somewhere in that frame, however it is unlikely that it hid dead center on the frame shown. Source I'm a Lowell Discovery Telescope operator, we've been doing some of the ground based observing for DART. I have a bit more info that I can't exactly say publicly but, things have gone well ;D
This mission has me so giddy! I love what you said at 0:48 Mission Sucessfull -- We crashed..
I stopped up and watched this. I was amazed how long it seemed to take to grow from a white dot to actual rubble but the last 30 mins were frantic
Scott: "Fly safe"
DART: "Well you could have told me that bef-" **BOOM**
Thanks for all your insights. This one in particular is an exciting mission!
Wow, that last image is amazing!
Love this, thank you Scott. We've come a long way since 1979 when Atari released the space themed arcade game Asteroids.
Thanks for a great video I appreciate you sharing your views and experiences… keep the videos coming👍🍻
Thanks Scott!
I'm definitely looking forward to the results as well!
Thanks, Scott!
Stay safe there with your family! 🖖😊
You are detailed in your observations Manley Scott, Thanks for you interest in all things Space.
That last image is beautiful. I was in awe
Thanks for update
Thank you Scott! Super exciting stuff
Had this on at work last night. Everyone was watching it. Even though I had to explain to everyone what was going on…
Awesome video. I was waiting to see telescope data.
That was incredible. Thank you, Sir.
2:50 I hope many game developers from now on will use that as a texture in their games as a homage to this mission
Unlikely, it's not seamless and would be quite hard to make seamless
@@Alucard-gt1zf its pretty easy to make anything seamless nowadays in substance
Fantastic video as always Scott! You have a great way of describing science
Yes ... "the difference is writing it down." Never thought of it that way before, but yes.
Super cool. I waited for Scott’s video on the mission for good reason
Thanks. This is the most informative presentation I've seen so far.
Scott ... It was Smashing 😂😂😂
Very inspiring, these images really take your imagination on a journey. Imagine how slow geology works on this astronomical dust mote.
I'm glad I found this video thanks. I was hoping to see footage of this.
Great video update Scott, thanks.
Terrain, Terrain. Pull, up! Pull, up.
too low, terrain!
17m off target, pretty good shooting from this distance
rookie numbers lol I used to bullseye womp rats in my T-16 back home, they're not much bigger than two meters.
Thank you Scott for taking the time to explain space stuff in simple but not condescending language. It’s very appreciated.
Thanks Scott
Really awesome for finding and combining all the footage!! I was looking for it and had some difficulty, so thank you very much. Although the cubesat images where extremely underwhelming, will we get cleaner versions of those pictures?
I agree! Scott delivers!
I thought the last cubesat picture was pretty spectacular!
For some reason I hadn't realized they were aiming at the tiny moon so it was amazing to watch it fly past the big asteroid and watch the big asteroid leave the frame.
Wow - very thorough! Thanks, Scott!
Another excellent video with great explanations, thanks again Scott! 👍🖖
I drove out to watch the launch in Vandenberg, which feels like only yesterday. It's awesome to see the conclusion! Also happy to hear Webb was able to image the impact!
A beer to everyone involved, good work!
Thank you 😊
I’ve been waiting on Scott to make a video on this. I watched it live and was astounded. Totally amazing!
I watched the live also (the last 2 minutes until impact), and was disappointed that I heard no mention of the observer craft. So I was hoping Scott would clarify it, and he did!
It's amazing how every telescope on and around Earth was pointed at that location. It's like we all came together as a species to see if we can defend ourselves from cosmic debris. Great work bij the DART team, amazing shots! Can't wait to see what JWST has for us!!
if anyone believes this is how we will save the earth from a crashing object as big or bigger than this, i’ve got ocean front property in arizona for ya at an unbelievable price!
@@kinggzz look at you being glass half full 🤦♂️🤦♂️🤦♂️
@@kinggzz If hit early enough, a tiny nudge from even a little impacter like this will be more than enough to push a giant rock vast distances.
@@Terminator484 maybe. but humans have an ability to muck the simplest things up beyond belief. if anything… a hundred years from now it misses earth and slams into the moon cracking it in a thousand pcs thus destroying earth or something crazy like that.
@@krist6074 no, not realy. fact is we are talking about nasa, giveme a break. psuedo science at its best. 50 years of nothing but keeping us grounded and literally feeding us scraps of information. trust me, if this is the coolest thing you have seen in a while from nasa, THATS PATHETIC AND MOST LIKELY NO WHERE NEAR THE TRUTH OF THE COOLEST THING.
More like the last part frame was corrupted by the digital signal processor and transmitter becoming fine gravel mid frame, with likely the last image still busy being DCT transformed in RAM by the image processor. Probably you have a part bit sequence that was received, but, because it was rejected due to failing the CRC check (for some reason) as the final part of the last scan line.
The lines and such yes are probably partly due to varying composition, of what is basically a cloud of pebbles, dust, and well chilled assorted ices, suddenly being shocked, but I would say a good part is also composed of bits of spacecraft that has pressurised liquids and propellants reacting for a brief moment as they were scrambled and mixed together, along with batteries that briefly were free to express all energy as well.
Well put together
Thank you!
I really felt that 'Fly Safe' this time Scott. Great reporting on a fantastic mission. I love how you go the extra mile for us by making a smoothed movie stringing together the images DART took up to impact. That's one of the things that sets you apart.
I almost have the impression that I can see a change in trajectory of Diddymoon on some of those ground-based observations of the impact. It was esp. apparent to me on the South African telescope's (SAAO) images. Is that possible or is it just an illusion?
And last, i have to say the lichia cube images were lower res than i was hoping, almost looked worse than the ground-based 1m instruments - but the impact jets were impressive and not visible from the ground afai could see.
edit: I realized the foolishness of my question about whether the changed trajectory is visible in those images. The change is miniscule. I read in the paper they predict about a 75sec change in the approx. 11 hr orbital period of Diddymoon. But something else I read confused me. They state that the change in orbital period will be measured by the change in brightness of the unresolved pair of asteroids by ground-based telescopes yet in the images you show, Diiddymoon is clearly resolved by such telescopes. So couldn't they just monitor their relative location every night and after a few nights (several orbital periods) plot the new orbital trajectory and determine the period?
IIUC Didymoon is actually not visible at all on these images, and the round shape we see is Didymos, the big asteroid. We don't see Didymoon with enough resolution to measure difference in velocity directly.
Absolutely incredible images the last few images before impact reminded me of my own back garden. I have two wonderful large erratic boulders and hundreds of smaller rocks in the clay. Nice to see I have a scale model of this event. Location I'm on the east coast of Canada eh! The perils of being a geology and space Geek. :o)
Thanks for better coverage of DART than I've seen in any of my other nerdy RUclips subscriptions!
Brilliant analysis as always!
man I expected a bit more from the images of the companion spacecraft. its so sad that they had to cancel AIM, we could have gotten some amazing footage from it.
I wonder how much static charge as well as magnetism (depending on how much iron, for example) might affect the path of ejected materials.
Good stuff, Scott. Thanks!
"rubble pile asteroid" 1:38 answered my question. Thanks.
Always fun watching stuff get blown up. Oh and science too…
Crashing into something at a high rate of speed and having a large amount of red being the last thing you see. That seems relatable and unnerving.