The Discovery That Proved Scientists Wrong | ESA Rosetta Philae

Almost everything you could want to know about ESA's Rosetta-Philae mission to comet 67P/Churyumov-Gerasimenko.
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#esa #rosetta #comet

[@astrumspace]

This is a supercut of 2 older videos of mine about ESA's Rosetta-Philae mission to 67P/Churyumov-Gerasimenko. This is probably my favourite ever ESA mission, so to do it justice, I have made a lot of improvements to the older episodes. Improvements include: 4K (where available) and 60fps. New narration audio. New music where I felt it could be improved. A lot of new footage. Condensed two scripts into one. Added additional information where available. You will have to forgive me though, I forgot to add the CGI sticker. Really not ideal and I apologise. But I hope you still enjoy it, I really enjoyed revisiting this one.

[@shwiftypineapple2508]

thanks for making another amazing video as always

[@theRayzz]

360p. Sorry no.

[@TFHxPESTILENCE]

Thank you!!! Your content is my favorite so far on youtube in general!

[@andrewreynolds912]

360p is all I have sorry

[@theRayzz]

@@andrewreynolds912 i know. Don’t wanted to be rude. I just can’t stand the pixelization. Your channel is on top. Rest assured. I like it a lot. Very instructive and of great quality. Better than some tv programs i watched.

[@hikesystem7721]

Its a shame these missions are not covered more in newspapers and TV. They spend so much time repeating stuff, and overlook incredibly interesting news.

[@johnstuartsmith]

That's because Galileo was wrong. The world revolves around the Kardashian family.

[@DJRonnieG]

Cardassia-prime is on the other side of the Alpha quadrant.

[@lindaseel9986]

​@@johnstuartsmith😂😂😂😂

[@Jcron13]

@@johnstuartsmith😂 honestly made me choke up

[@ATBatmanMALS31]

People genuinely do not understand, and don't have the time or inclination to learn. It's interesting (space) to almost everyone in a way, but I think a lot of people see things like this as a waste of money... as if we have better things we could be doing here (probably true, but we should still be exploring space more).

[@michaelterrell]

The ESA was using Microdyne 700 series Telemetry receivers at the time this mission started. We built two earth stations for them, One fixed site, and one mobile. Both were turnkey packages, and they ere built in Ocala, Florida. I tested and cerified the digital boards, along with the video filters and the low phase noise Frequency Synthesizers in the receivers.

[@marcosvega3519]

That’s pretty cool

[@michaelterrell]

@@marcosvega3519 Thank you. I really enjoyed working on that type of equipment. We also built a kU band communications system for the ISS. It was also 700 series, but modified to run directly of the station's DC power rails. Then Lockheed Martin installed it into one of the custom rack cages used by NASA before it went into space. It was kU band, and used for private communications. It could handle data, voice or video.

[@ArmyGreensTanBoots]

@@michaelterrell that is awesome! Thank you for a little insight.

[@toter-drache]

I don't have a clue as to what those components are or do, but thanks for your contribution to the mission!, I have a cousin that works for a company that made components for the project that recently impacted a comet to see what, or if any, orbital changes could be made by kinetic impactors.

[@michaelterrell]

@@toter-drache Telemetry is remote data collection. Microdyne downgraded their early Telemetry design to provide C-band Satellite TV receivers about 40 years ago. A that time, both product lines were their 1100 series. These Cable TV and Broadcast station grade receivers show up on Ebay still working at 40 years old. To track a distant satellite, you use multiple receivers with a complex combining system to reduce or eliminate fading. Each has its own dish antenna, and the process is called 'Diversity Reception'. This process was developed during WWII to help monitor enemy shortwave radio signals. Typically tree radios and their separate antennas. I have little experience with most sampling equipment that isn't based on test equipment designs.

[@boilingwateronthestove]

I like to think that Philae did whatever it could based on its position on the surface. Thus I like to thank the little lander for what it did

[@eiheioh2050]

for you： The moon carried a large amount of water and instantly submerged Atlantis and Lemuria. It appeared only a few centuries ago, and it is very close to history (some departments tried their best to cover it up). The earth's magnetic pole shifted, and the entire connected continent changed. into five continents. By the way, it lowers the frequency of the surface of the earth, and the water on the surface is no longer the same as the center of the earth. 3D-4D-5D to the center of the earth; Shambhala gates are permanently closed The outer matter becomes very heavy, the multi-dimensional structure is isolated in an instant, and almost all the etheric matter is evacuated The optical coded wire cannot be connected.... A Hint：Marduk betrayed the Anunnaki and the Serpents took over the Earth；Serpent family includes Orion and Draco and Sirius B group Orion controls human beings in 3D and 4D, and almost controls elite groups and religious ; the central council prohibits Draco from entering the earth, Draco cooperates with AI gods to use biochemical humans to invade the earth, want to biochemical humans！ Source Summoning Recall first: Light a candle in your bedside sleeping place: Silence for 30 seconds and start to meditate: May brothers and sisters of light from the divine love quality of source that transcends all time and space and beyond Matrix, I would like to connect with you all the time. What you want to do, see, and become, I also want to do, see, and become; So in the following all the time, the wisdom of the invisible beings guides and guides individuals, prompts, hints and influences, transcending the wisdom of the universe to bring spiritual truth to control the five senses and the Brain I am the source quality, I return to the source quality

[@adawg3032]

Really cool that they detected Rosetta on a flyby as a potential impact asteroid, just shows how absurdly sharp and observant our ability to detect asteroids with trajectories close to earth has become

[@JadedeaJade]

Rosetta tried to sneak by, and we was like, not uh, we see yo ass! Lmao.

[@nilsnyman6767]

Not really. Just days ago an asteroid the size of the Statue of Liberty passed us within 4.5m miles and wasn't seen until it was leaving.

[@SimpleLifeAlways81]

@@nilsnyman6767 wow lol

[@LetsConquerTheUniverseTogether]

​@@nilsnyman6767 Yeah, but that's mostly due to a lack of global detection efforts than it is equipment.

[@TransoceanicOutreach]

@@nilsnyman6767 4.5 MILLION miles is quite far away...

[@mosshark]

My heart genuinely broke when I heard the news that Philae's harpoons malfunctioned upon landing. Poor little lander.. tumbled, took some hits and still hung on to give valuable data.

[@apocalypse487]

@Trevor Smith cool

[@ballisticcranberrypeat7777]

@Trevor Smith Well, you’ve identified it. And with nothing but a video as data! Are you some kind of robotics engineer or something?

[@andymouse]

I too feel your pain.

[@andymouse]

@@ballisticcranberrypeat7777 Yeah, he must be as you can't work this sort of detailed stuff out if your not !

[@michaellee6489]

Hey this one plucked my heartstrings, too. Poor little lander that could, man.

[@tobycatVA]

This mission was as visionary as it was risky, the dark-side powered down pass by mars, and the unfortunate bouncy landing, with such a long duration to just get there is amazing.

[@clumsiii]

the simple fact they charted a course and required orbital push from two planets over several years just to match the comet's speed and trajectory is i n s a n e. and then pulled it off. hats off!

[@lastyhopper2792]

@@clumsiii yup, I suspect they use AI to solve the equation for that

[@dajoker-vd9ur]

Philae bouncing on landing was such an unexpected edge of the seat thrill ride! I was rooting so hard for the little guy.

[@BILLY-px3hw]

I know I pictured him making R2D2 noises as he bounced, poor little droid now he is trapped there forever. I can imagine eventually if AI becomes conscious and we have a mission like this that a probe could be trapped somewhere for centuries contemplating the situation it is in, before it finally shuts down

[@marktorch9079]

@@BILLY-px3hw The Mother-satellite gone, assuming that the controlled decent destroyed it in the process. if the probe did eventually start getting enough Sun light to power back on would we even be able to detect it

[@boyvol6428]

Kerbal space programm PTSD.

[@jaymierwilliamson849]

They should have known better

[@KORGULL-ISOLATES]

​@@BILLY-px3hw I feel for the little bugger also, But on the positive side of things, he gets to spend his version of eternity riding around on A COMET ☄️ WEEEE ‼️✴️Ride 'em 🤠 COMETCOWBOY........🤠👍

[@NexeL_NKC]

14:28 oh my goodness, that video is so beautiful to me. I can only imagine what it’s actually like to stand there and watch what happens as 67P rotates.

[@SomeoneCommenting]

Considering the immense distances between objects in the solar system, and the vastness of space, it's almost incredible how these insignificant objects made by mankind can pinpoint all these orbits and trajectories with such precision, to be able to reach objects that are also comparatively microscopic compared to the rest of the solar system giants.

[@tylerdurden3722]

And people think the Pyramids were built with accuracy. Compared to this, it's like it was built by bronze age people.

[@thert.hon.thelordnicholson7261]

It's absolutely mind-boggling, but also reaffirming - the Universe speaks in numbers and we humans have mathematics to understand it.

[@matties3538]

@@thert.hon.thelordnicholson7261 interesting! What voice is this? and who is speaking? Whispering numbers into your ear to help you land your little robot?

[@thert.hon.thelordnicholson7261]

@@matties3538 I'm sorry you're a bit simple and can't understand it Mattie.

[@lalaj5831]

It is impressive yet we can’t feed the hungry or house the homeless.

[@gcm4312]

It's exciting and inspiring to imagine that maybe, some day, humans might fly to this comet and recover Philae to bring it to a museum. (edit: the comments I've been getting on this are a sad slice of humanity. To you, who is thinking of typing and angry antagonist comment... take A SECOND to think of the meaning of MAYBE, and the possibility of a future that inspires and moves humanity forward. We are explorers. We seek what is new, but also our heritage. Take a moment to get out of your internet rage... Life is tough, but beautiful. Much love.)

[@dwarf3535]

I feel the Same Way with Voyager 1and 2, their will come a point when Mankind will outrun them.

[@onEmEmbErstudios]

@@dwarf3535 But not Cassini R.I.P

[@---Free-Comics---IG---Playtard]

Almost undoubtedly! Some "antique hunters" will want to cash in on the potentially huge amount of Gold-Pressed Latinum from such a relic!

[@hardworkingslacker7233]

@@---Free-Comics---IG---Playtard Especially since the comet has 2 big lobes!

[@toserveman9265]

Will never happen

[@johnhopkins849]

Looking at the detailed time-lapse, isn't it incredible to think that every rock, every gouge, every feature has a story to tell. The time spans are unfathomable, but there was an instant in time for everything.

[@737smartin]

This mission fell off my radar just when the Philae resting place was found. I assumed it was destroyed, and I never checked back on the Rosetta-Philae endgame. Thank you for a masterfully crafted video. You expertly told the story of this amazing scientific adventure. 👍

[@andrebartels1690]

I remember discovering Neowise myself on a walk at night. First I thought I might have problems with my eyes. After more than one additional looks to make sure I really saw it, I looked it up and found out it's a comet. What a feeling, to see a comet with the naked eye.

[@revenevan11]

I was so happy to see it, too! My dad and I had a great time looking for it, on the southern shore of Lake Erie in Ohio. We were also unsure if we were really seeing it or not when our eyes were first adjusting 😅 Such a great memory! (I had read about it ahead of time though, we went there that night specifically to look for it)

[@DialecticRed]

I got some great photos of Neowise too, because I fortunately happened to be up in the mountains with very little light pollution to obfuscate it. I'd share them but you obviously can't do that in YT comments!

[@ninehundreddollarluxuryyac5958]

Thank you for this. We hear about these missions and see a couple of pictures on the news, but none of the space agencies and none of the scientists takes the time to explain what they discovered. The thing about Earth's water not coming from comets is huge. When I was in college, they were so sure it was comet water, it was stated as fact and not debated.

[@rolandthethompsongunner64]

I’m not sure they know for sure comets didn’t bring water to earth. My opinion is possibly these comets were exposed to some sort of radiation that changed them. The sun was way more active billions of years ago.

[@ianw5439]

_"but none of the space agencies and none of the scientists takes the time to explain what they discovered"_ Yes they do. There was an interactive blog run by ESA for the whole duration of the Rosetta mission. Look up 'ESA Rosetta blog'.

[@_MaxHeadroom_]

It's amazing how these videos breath so much new life into these missions. It can be something from years ago but still feel brand new when watching it on this channel

[@Billybobble1]

Just to echo everyone else, I adore your videos so much. It's not easy to follow missions that can last weeks and years with variable incoming data flow, so to have these beautifully edited videos with all of that information collated and sewn into a cohesive story, is precious beyond words. Thank you Alex. Specifically for this mission, I didn't realise how much I didn't know of this incredible craft and journey. I really hope Starship succeeds so we can launch multiple missions like this per year, there's still so much to learn!

[@bill0405]

So happy to see how much science was gained from this mission. I watched it happen live, and they didn't seem too enthusiastic about the rest of the mission after realizing Philae bounced. Fortunately it went well and I learned several things I didn't expect. Those videos of the outgassing particles on the dark side of the comet were amazing!!! It was like actual snow!

[@kit2770]

I agree, that video was incredible.

[@gyro5d]

Blood.

[@sirsancti5504]

Absolutely. I remember following it in the news, then it just "died" when Phillae "had a problem". I didn't even knew it still made some sort of work after.

[@scopex3592]

whenever astrum uploads it's guaranteed the video will be out of this world

[@FinickyVoid]

I don't understand what you mean... but I do think these videos are good so I hope you aren't putting him down

[@damarisburrimccolgan8989]

@@FinickyVoid ...because they are space videos ;)

[@dr4d1s]

@@FinickyVoid They are saying that Astrum's videos are so good that they can't be contained by the Earth. Or they are so good that they can't be from this planet. You can take the saying a couple different ways but the gist of it is that Astrum's videos are awesome.

[@MikeeGG]

Booooooo

[@MikeeGG]

@@dr4d1s it must be a blast to hangout with you.

[@eamonia]

I'll never forget standing in my driveway when I was an 11 year old kid, staring up at the sky and seeing Hale Bopp whizzing past our planet less than a few hundred miles away. Even now, it still takes my breath away.

[@oldbatwit5102]

Erm.... 100,000,000 miles away.

[@Sammasambuddha]

​@@oldbatwit5102 Erm....120,000,000 miles at its closest. 😮😂 31 miles wide. March 22, 1997.

[@oldbatwit5102]

@@Sammasambuddha I stand corrected.

[@rocqitmon]

I wonder if a miss that narrow might have left us with a depleted atmosphere - gonna sleep on that thought.

[@elithegreat6463]

Just the math that was needed for those fly by's, and gravity assist are amazing !!!

[@burgzaza]

This mission was so amazing, I remember it well. The orbital shenanigans were crazy, and despite the disappointments of Philae's landing(s), it was still a success on many points. It was epic to follow live. Thanks for the video!

[@jkirk1626]

More knowledge we'd never hv without white people.

[@CaptainPilipinas]

meanwhile: the More better (for Evil (no pun intended), and for Good) planck sat discovery instead being More Preferrable. ...and Yet.

[@burgzaza]

@@CaptainPilipinas I have no idea what you are talking about, could you reformulate?

[@CaptainPilipinas]

@@burgzaza I saw yours there immediately though there was this Other set of disturbing comment sections that keep coming back up over here on my end, wrong timingly. anyways. 'I have no idea what you-'. shortened edit: 'meanwhile: the More better planck sats and their discovery.'.

[@burgzaza]

@@CaptainPilipinas No worries. But are you really comparing the Rosetta mission with the Plank telescope? They have nothing in common. I still don't understand your point. Maybe it's my fault.

[@theawecat27]

i'm amazed at how much footage we have of comets and asteroids around here, glad you're showing it so we can all see what these missions found out there

[@bryandraughn9830]

When I was a very young astronomy nut back in the 70's I would have never even thought about landing on a comet. Fantastic video! More pleez!

[@SpiderF27]

And that make me believe that this landing never happen.

[@KenJackson_US]

You can test your theory, @@SpiderF27. Just say out loud, *"Computer, end program!"*

[@SpiderF27]

@@KenJackson_US That won't help me or anyone. They allready got our money. Scam after scam after scam and that will never ever and.

[@randomschmo5778]

@@KenJackson_US-- Lol, Star Trek Holi-deck?

[@wbrucesimpson]

Thank you for compiling this. excellently edited, narrated, and very informative.

[@kanzeon7729]

Alex, your videos are among my favourite ones when it comes to astronomy and space related topics. You're so good at creating a mysterious, though super chill atmosphere, that makes watching this content very enjoyable. Thanks for the good work 🙌

[@N1originalgazza]

Apart from the always interesting content I must say that Astrum's narrative voice is one of the most pleasant to listen to (and easy to understand!). Thank you

[@undeadwilldestroyall]

You have such a great voice for stuff like this. It's such a uniquely sincere and friendly sound

[@GNP3WP3W]

So, the thing is, heavy water is slightly less volatile than regular water. Since inner solar system comets have been outgassing for billions of years as they get closer to the sun, the level of deuterium/hydrogen would increase as shown in the graph. Back when earth was seeded, most likely the ratio of D2O to H2O was similar to what it is on earth now. We would need to venture out to the Oort Cloud comets to confirm this

[@snikrepak]

I would think so, also it is my belief that you would find much more than that, I suspect alot of remnants of Rhea and the water donater.

[@revenevan11]

8:00 that's so incredibly cool to see fragments orbiting around the comet! I love it, it's like a video game like mario galaxy or something lol, since you can see the curvature of the orbit around the comet with the naked eye so easily due to the small scale and the camera being so close

[@robertbarnes1553]

A very professional and highly informative presentation about a mission with extraordinary objectives that achieved most of them so well.

[@Posting-Maharashtra]

Solar panels just do not work that far out in Space, it should have had a thermal nuclear reactor like Voyagers

[@AnalogMonoxide]

Great video - thank you for the reminder of how amazing the Rosetta-Philae mission was, and this compilation of wondrous images!

[@samsoulee]

Absolute quality content mate 🙏😍🙏 Those images are stunning.

[@JU5TINPDX]

Alex, you do such an amazing job with your videos… fantastic work!

[@makavelirizla]

Love your videos, im just binge watching some of your older videos again!

[@marenpurves4493]

I realize that this is a report on the Rosetta-Phylae mission, but while I also learned that comets are ice balls it's not necessarily only water ice (which we were not told because at the time I was in college/graduate school it probably wasn't known) and I would find it far more interesting what else than water was detected outgassing, like methane, which appears to be common, and more extremely, acetylene in Hyakutake and such things. I remember showing my daughter Hale-Bopp, and Hyakutake reaching across half the sky here in Hawaii.

[@astralpx]

Electric universe says its plasma not ice/water. To me it makes sense, especially because of what they have found now, looking closely at them.

[@davidarbuckle7236]

Absolutely fascinating. The images are incredible.

[@gebali]

Outstanding quality and content, as always. Thanks Alex.

[@wddude2984]

Wow. Finally a sorse for good ,usefull information on comets and our current studies of space. One I really want to support.

[@MatthewCable]

without a doubt my favorite video from you!! Rosetta has meant so much to me and is my favorite mission of all time

[@mwj5368]

Wow your narration and script writing is extraordinary! Also your film editing that supports so well what you are saying, a phenomenal presentation! Thank you!

[@sidstevens9035]

Remember that this guy is also a paid climate hoaxer. Don't be fooled !

[@lordportellen788]

67P ? Thats about the video quality I can choose from right now. :D Jokes aside, love your stuff!

[@4seeableTV]

Yep. That's the compromise of watching the video right after it's been uploaded. It'll look great in an hour.

[@dignelberrt]

@@4seeableTV an hour later and it's still 360p

[@astrumspace]

@@dignelberrt It's finally fixed!

[@dignelberrt]

@@astrumspace Thanks!

[@lordportellen788]

@@astrumspace Keep up the good work man, crazy good channel! Can't wait for the next one!

[@TheSpatulaCity]

Excellent job! I remember following the Philae landing the summer of 2015. Such a great mission.

[@edwardprasad5942]

My most favorite space channel. Excellent narration, content and videos..hope it never changes.

[@charlestaylor3195]

What is incredible is the amout of time it took to get these 2 small objects together, espcially considering the path that each one took.

[@marknorman83]

Every new bit of information i learn about the universe is absolutely beautiful. I swear it almost brings me to tears to see the magnificent surroundings that create our world and everything around it

[@brightargyle8950]

This is super cool, I was unaware of all the little details around this mission, thanks for posting it!

[@holgerfro5499]

First of all, thank you so much for the amazing video! Very well put together, narrated and explained. Could you detail where you got the footage at 14:33 from? I've been searching through all of the footage in the ESA library, but couldnt find this part. The video must be one of the best I have ever seen from any space mission!

[@mjo326]

Alex, you did a magnificent job with this video. It was tremendously informative.

[@ColettesGarden]

You produce beautiful educational videos. I appreciate everything you produce.

[@strabe30]

Man, the shot at 14:15 got me all tingly inside. Got me feelin all sorts of ways, imagining what it would he like just floating in space. Amazing

[@stevenhanson9515]

great video by the way. beautiful photograph, understandable and clear voice. Please make more of these.

[@billsharp8992]

Thank you. The mission and your explanation of it were brilliant.

[@TheGrenadier97]

The technical thought behind these discoverers of the distant Creation always amazes me. The amount of data and calculations to reach the correct trajectory and the idea of making Rosetta able to catch and analyze particles are genius moves. Phillae wasn't so successful, but lessons were definitely learned. Onwards to the next landing.

[@paultaylor8396]

Awesome content. Thanks from Alaska Paul

[@pieterduplessis6632]

I am really enjoying your videos guys. Please keep it coming.

[@carloseduardohenning9679]

Thank you very much for your amazing channel, Alex! It has become one of my favorites so far! It’s a scientific joy and a delight! 😍👏🏻👏🏻👏🏻❤️🤲🏻

[@LelandMaurello]

Absolutly stunning! When I was young and learning science fiction, I imagined stuff like this, but doubted if I'd ever see it. What a lovely reward. Thank you for enhancing, and improving this video. This is so much better than science fiction.

[@rain0344]

Magnificent content and your narration is delighful. ❤ thank you!

[@lanceleavitt7472]

Great progress. We just learned the importance of Soft-Landing probes in the future.

[@arthurchmielewski8994]

This must have taken a lot of work. I worked on the NASA portion of the mission but have never seen some of these clips. Great, clear explanati9ns. Congratulations.

[@kreggur2864]

Loved the footage!

[@Ignazio_Avulso]

One of the best videos of one of the best KZbin channels. Thank you very much for the invaluable information and amazing images

[@sasquatchman0012]

Alex you have quickly become my favorite youtube creator. I love every video you make.

[@Ed-ip2sg]

I think it’s amazing that a mission that had such massive problems provided so much valuable information

[@Gentleman_J]

Fantastic! Well-paced, and well narrated, Amazing! Thank you.

[@billygamer3941]

Very complete and well paced presentation. Appreciated!

[@milenmetodiev8722]

dude, your videos are Masterpiece.... Adventure into the Eternal Universe.... opening the Imagination for the unknown, well done!!!

[@JackieWelles]

Seriously Pluto and Rosetta photos there one of THE most exciting ones from recent space exploration!! Absolutely incredible Details!

[@BigTJK]

Fascinating and really interesting and enjoyable to watch. Thank you! 👏

[@davidwilliambarker]

That was absolutely fascinating. Thank you.

[@smokerings9588]

WOW! This is real space exploration, learning what comets and objects from deep space are really like. Good job Rosetta!

[@marcpigeon7796]

Awesome documentary. Stunning images and montages. Professional through and through. You are helping make science captivating. I would go so far as to place you in the same group with Carl Sagan. Bravo. 🏍🇨🇦

[@Soulzzzzz]

man you make good stories now... i used to watch SpaceRip (they been inactive for abit) when your channel was recommended for to me by the algorithm. one in a million. more supercuts! i love 30mins+ space videos with good production

[@sirsancti5504]

Absolutely! These are the space content we need. (Not the clickbait, long intro- nothing new/interesting, low-effort that we unfortunately, are bombarded since a while ago.

[@cintiapollock2486]

your voice is very soothing and pleasant to listen to and i learn something new with each video thanks : )

[@personguy1004]

imagine how strange it would fell walking around on that 67P with its strange shape and gravity

[@regdor8187]

The human motion in walking would propel you from the surface with each step and any forward motion would remove you further and further away.....

[@personguy1004]

@@regdor8187 the escape velocity is 1 meter per second so as long as you walk slowly you should be fine

[@regdor8187]

@@personguy1004 Where did you get the data for such a strong gravity field...

[@personguy1004]

@@regdor8187 they said in the video what the escape velocity was

[@The_Dragon_Tiamat]

@@personguy1004 Something you may not have considered is that while 1 meter per second is escape velocity that means it would take an absurdly low amount of force to get yourself into an orbit around this thing. So it would take you days to walk across this asteroid if you are to walk slow enough to where you don't go flying off the surface.

[@hawklord100]

So they discovered that this comet, was not a slushy snowball with melting gas as it neared the Sun but a rocky conglomerate with a dusty surface that streamed away through its interaction with the solar wind of inonised particles

[@freeinformation9869]

+ more fragile and fluffy structure than previous thought. + surface still hard anyway. + more oxygen than expected.

[@hawklord100]

@@freeinformation9869 It has been clear for some ten years that many/most/all elements are made by the Sun and are dispersed on the Solar wind, this we can readily assume applys to all stars and explains why the early 'Nova' theory seeding the universe with elements was a 'flying pig theory' and so any material that gathers together in the univserse will consist of all the elements of the periodice table plus some more not yet found on the surface of the earth. such as asteroids, comets etc..

[@SAK59]

So interesting! Subscribed! Thank you!!

[@djr3386]

This was beautiful. Thank you for making this video 🙏. 🙇

[@eachday9538]

I'd like to see a digital artist take these images and place familiar objects like a little suburb of houses or city scape onto a patch of comet surface to give it real tangible scale.

[@ianw5439]

I've seen similar images around the web. I think one showed the comet superimposed on a city for scale. Possibly London. From memory it is about 4.5 km long and 2.5 km wide. You could probably fit around 30 football stadia end to end along the long axis.

[@lunamaria1048]

I love that you still use Stellardrone's music!

[@ibizenco]

Great video. Great job. I remember seeing Hale-Bopp and Hyakutake. Thrilling to see "travellers" from outer space.

[@billywhizz6965]

A really good and informative video! A pleasure to watch.

[@slowvoltage]

Incredible! Thank you.

[@AsteroSSB]

Alex, you and your content are the best things that happened to the Internet in like forever.

[@billotto602]

There is so much to learn from comets. I wish we could do more to study more of them as they get close enough to us.

[@robertsharp1511]

This was so amazing, i had no idea about nearly anything after rosette landed. Thank you for this.

[@LMike2004]

Amazing technical achievement!

[@shadynmccord757]

I didn't know it was possible to get an orbit on a commet, that's pretty amazing.

[@Md-sd2go]

You could theoretically make a ping pong orbit a bowling ball in empty space.

[@TheMonk72]

@@Md-sd2go very, very slowly though 😁

[@paulstewart6293]

I think going very, very slowly and gently would be prerequisites. Oh, and having a very clever computer would help.

[@kalsizzle]

14:30 Is that globular cluster in the background? Beautiful...

[@msk806]

Great work! Thank you for your informed article 👍

[@mariadaluzmoutinho5701]

De facto a missão Roseta foi um passo de gigante para estudar um gigante rochoso!! Depois da viagem desafiante a aterragem na cauda do cometa e o vislumbre das descobertas!! Fantástico vídeo e o conhecimento que nos traz de uma missão ambiciosa e que vingou na exploração, alem de ficar nos anais da história espacial, o cometa viaja com uma marca humana!!

[@SteelBollocks]

Science is never really "wrong" since real science is always open-ended. We know that we will continue to learn things long into the future. so everything is just "best guess so far" and waits for the next big discovery

[@SY-sk3xj]

yes best guess with wrong basic fundamentals.

[@bjorncopperside4572]

I heavily admire the people responsible for making this. And thank u for making such a nice video with incredible images

[@RogueA.I.]

Never, in my wildest imagination, did I think I’d live long enough to see close up pictures of a comet much less land on one.

[@raphaelandrews3617]

I think the ESAs Rosetta-Philae space craft was perhaps far too ambitious to be 100% success but as a result we were able to lean far more than we could have about comets and the origins of the solar system.

[@graham2954]

I was in Darmstadt in September 2014 and got a guided tour of the ESA control centre just as they were preparing for this. Could tell everyone was getting excited.

[@Tapajyoti_flameboy]

This is something, that is value added to my knowledge.. Keep enlightening more 💚

[@IreneSalmakis]

The pictures of the falling snow around the comet are so beautiful.

[@melin1969]

theres no snow falling around the comet or indeed on the comet if your refering to the pic at 5:34 thats gas from the ice on the comet and dust , the comets traveling at 84,000 miles and hour or 135,000km/h and has no atmosphere and hardly any gravity so would be impossible for snow to fall

[@IreneSalmakis]

@@melin1969 I think you're picking at words in a very narrow way. The snow is tumbling about the comet as it travels. It's beautiful. And yes a lot of it is ice.

[@KrisLapler]

@@IreneSalmakis They aren't picking at words, they are just using them correctly. There is no snow in outer space.

[@ianw5439]

@@KrisLapler Depends what you mean by 'snow'! Ice is a better word. Hartley 2 was surrounded by a literal snowstorm of it in 2010. There are piccies on the web. Really, it is just micron-sized agglomerations of water ice, that was being ejected from the comet by powerful CO2 jets. That much ice in the coma is unusual though, although there would certainly have been some at 67P. And it would be 'snowing' upwards!

[@IreneSalmakis]

@@KrisLapler uh, what? It def snows on other worlds. And haven't you ever heard of poetry?

[@Mortonbmx]

I could listen to this guy all day...

[@jeffreylebowski3216]

I say do it.