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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[@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).

[@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.

[@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

[@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.

[@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.

[@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. 👍

[@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

[@WirrWicht]

@@lastyhopper2792 Not very likely. Systems to do numeric simulations of orbital dynamics are quite advanced and require way less computing power than AI. Todays Nvidia RTX 4090s shader units are less than 20% faster than the BlueGene/L beta-System supercomputer, the fastest computer according to a Top 500 list from November 2004, the year the probe launched.

[@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........🤠👍

[@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

[@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.

[@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.

[@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

[@desertwhaler]

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.

[@elithegreat6463]

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

[@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'.

[@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.

[@_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

[@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.

[@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!

[@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

[@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 🙌

[@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

[@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

[@Santos-qq3qk]

Just to be alive in these times, it's just awesome & a privilege to see what has been accomplished in space.

[@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!

[@undeadwilldestroyall]

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

[@lanceleavitt7472]

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

[@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 !

[@edwardprasad5942]

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

[@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.

[@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.

[@gebali]

Outstanding quality and content, as always. Thanks Alex.

[@3000waterman]

Wonderful. Thank you. That's how to make a KZbin video. No juvenile special effects; no ghetto like, like, like, like speech impediments; just grown-up reporting and editing. Subscribed.

[@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.

[@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..

[@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.

[@samsoulee]

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

[@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.

[@ColettesGarden]

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

[@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.

[@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!

[@charleslord8672]

The quote about 20:15, where you mention the fact that early earth development would have literally been "hell on earth "! Thanks for the updates, and, one more thought if I may, everyone who is alive during this time should feel VERY fortunate to be around in these days as we are at a major crossroads in terms of humanity, physics, mathematical breakthroughs in science as well spirituality, etc., if one does not see the correlation and interconnection, you my friend, see less than a blind person. A blind person overcomes their handicap by opening their minds to sounds, tastes and smells along with feelings on a scale the average person takes for granted. Take into account, one of the human traits that we have been blessed to have, some would use against us, is compassion. When that is gone, thus will be the way of humanity

[@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.

[@milenmetodiev8722]

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

[@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.

[@mjo326]

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

[@astronomicalreason9807]

Imagine if Philae stays attached to the comet and in a couple million years another species discovers a random comet with a robot attached to it

[@C21H30O2]

wir sind aline 🎶 🎵 🕺

[@TheSpatulaCity]

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

[@ropace37]

I totally agree with missions like this don’t get near enough attention from the public or media. Additionally, with all of the out gassing comets experience it’s interesting to see how little ice there is on the surface of these bodies. Meaning most of the material given of by the comets is actually volatile gas and dust. Not necessarily ice or water vapor as we know it.

[@aurotirannos]

Wonderful! An amazing quantity of information condensed in less than 23 minutes.

[@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.

[@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

[@2listening1]

That’s such a great story when it was misidentified as a new asteroid!

[@revenevan11]

I agree, I'm surprised I haven't heard it before!

[@wddude2984]

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

[@thatguy431]

Man I remember reading this book "amino acids and the asymmetry of life" by uwe meierhenrich that kept talking up the Rosetta Philae mission and how it would give insight into the chirality of amino acids not on earth. Was so sad to hear these experiment never got carried out! Still an impressive feat. They'll get it next time :)

[@rolandthethompsongunner64]

Maintaining a lander on an active body like a comet never seemed practical to me. The fact they pulled off what they did is amazing. Hopefully we’ll see a better planned and financed mission to another comet soon.

[@thatguy431]

@@rolandthethompsongunner64 no doubt!

[@ForgottenMachines]

5:40 in addition to being a stellar-awesome video, I love the music at 5:40 too!

[@RaumBances]

Fantastic collection of images and videos with detailed explanation of the mission. Thank you.

[@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?

[@bigsarge2085]

Fascinating! I observed Hale-Bopp as a teenager, and NEOWISE after I had retired from the Army, both from Wyoming where I lived then and now; with a whole career in between. Amazing.

[@billg7813]

Thinking about gravity blows my mind. When you said if I jumped off this comet I could reach escape velocity it makes me wonder about the force that holds it together at all

[@jbcharm]

Electro magnesium

[@billygamer3941]

Very complete and well paced presentation. Appreciated!

[@gpetheri]

Did the harpoons fire and push it 1km up, instead of digging in (Newton's 3rd Law)??? As you mentioned, the surface was a lot harder than expected.... Or did they receive a failed to fire message?

[@NobodysSon]

All the articles I've read say they didn't fire.

[@ianw5439]

The explosives degraded, so they didn't fire.

[@ibizenco]

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

[@AnalogMonoxide]

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

[@LMike2004]

Amazing technical achievement!

[@cintiapollock2486]

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

[@slowvoltage]

Incredible! Thank you.

[@glenrosarian2352]

Numquam me obstupueret quomodo scientistes navem espacium in cometa terrare potuerint. It never ceases to amaze me how scientists could land a spaceship on a comet. What an amazing scientific achievement-- landing a probe on a comet!! 😊

[@MegaBanne]

The dust contains to components to electrochemically form water. It is traveling in an electric current sheet after all. The same current sheet that powers the aurora.

[@davidflitcroft7101]

I remember this mission because of that incredible flyby of Mars -- literally skimming the upper atmosphere and getting some excellent shots of it. . . But the most valuable part of the mission may well be the chart @ 19:37 with all of its implications. e.g. Earth received its water from early asteroid impacts, clearly. These small bodies have since lost [much like Mars] most of their water-ice. Perhaps the best Astrum video I have viewed. Most impressive. . .

[@CraigCholar]

All those gravity assist fly-bys to give it mighty big boosts prove the mission was truly a fly-by might operation.

[@TomasVolley]

Stellardrone - Encyclopedia of Frozen Dreams Stellardrone - Eternity Great music for this video. Feeling like the 2001 movie.

[@kiwidiesel]

This was awesome. I saw Haleys Commet last time it passed earth when I was a kid, I will be an old man the next time it passess if I am lucky enough to see it twice in my life.

[@KiddleSchiddle]

Title: "What Rosetta-Philae Discovered" What we see in the video: Stuff about comets, the whole mission description, what happened during landing ... and what else not (didn't watch the rest, because it is too long and describes too much stuff that I didn't come here for.) Could you create multiple videos for this topic? One with an overall overview of everything, like here, and one video which really only summarizes, what was discovered. Because I know about all the other stuff and expected to get an update on the discoverys (only).

[@jayztoob]

This is extremely interesting, and I'm happy that the captions are so accurate because the accent of the narrator makes it difficult to follow. I found myself spending so much effort to understand the words that I couldn't pay attention to the content. 'Maybe it's just me, and my family, and my friends that happened to be here when I watched this. Anyhow, thanks for producing such an interesting and informative presentation.

[@mathewbrother]

In fact space craft propultion tripulation is really rich for morphological and cientific experiments. Another Neptune handevou commit, Rosetta Phillae. Thanks so much sir 👑

[@dichebach]

I knew a good bit about the Rosetta-Philae probe and what it had found. But this is a nice "story book" synopsis of it. It is reassuring to realize that there are sensible, smart people making good use of our tax dollars to expand our understanding of the larger world we live in. In the long-term much of this information will likely be crucial to the actual beginnings of us becoming a true spacefaring species, i.e., building the first habitable (with artificial gravity) station in Earth orbit and at least some degree of self-sustainability from gardens and animal life (probably just insects and bacteria in the earliest versions, but something to create tiny ecosystems that have some degree of self-sustainability with periodic introduction of resources form Earth). Once people can live in relatively healthy environments in space for months or even years at a time, then we will be able to say we have begun our journey into the cosmos, but so far we have only engaged in furtive exploratory expeditions, a distinction I fear many do not appreciate. The work that has been done since the 1960s and which will continue to be done over the next 50 to 100 years to survey the exploitable resources of the near solar system will be critical to making this birth of human spacefaring a reality. It may take us 100 or even 200 years to establish large-scale habitats in near-Earth space which can act as havens in the event of disasters on Earth, and the idea of sustainable "colonies" on inhospitable hellholes like Mars or the Moon is something which may never come to pass (can you imagine the horror of siring and raising children in something so radically different from normal Earth gravity as the Moon or Mars?; I shudder to contemplate the irreversible harm this would cause to a developing child). Our future in space, for the first few thousand years will be almost exclusively in the form of: larger and larger rotating habitats populated with enough biological systems to provide more and more degrees of self-sustainability for the various organics essential to life, as well as "tours of duty" by explorers, prospectors, miners, industrialist, and probably soldiers to outposts in myriad locations (asteroids, comets, moons, and even to some extent other planets). The basic knowledge of our solar system being built up by visionary missions like Rosetta-Philae, and countless others, is building the foundations for these potential human futures to come true. None of us alive are ever going to enjoy these benefits, but we can still rejoice in the indomitable spirt and intrepidness of our species and wish our descendants the best with what we bequeath to them.

[@Signaman-z9d]

This landing is on par with landing on the moon. Breathtaking this manoeuvre. 👏

[@brightargyle8950]

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

[@rain0344]

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

[@karenmcneill2602]

I love space and videos about it. I believe in a wonderful Creator, God. Without him none of this exists.

[@HouseGuide]

Karenmcneil, yeah, too bad the creator did not help the mission succeed but I guess he did not want to or did not have the power to.

[@user-qc9pd5fe5q]

Right, it's god's fault for everything. Humans aren't the ones that make mistakes and do wrong. You sound bitter against a god you don't believe exists.

[@siggyretburns7523]

Thats cool that they calculated all the slingshots to get it on almost any comet that they choose. Amazing.

[@murch5054]

Really love your content. Thanks. But it seams that tour videos has the most amout of youtube ads that ive ever seen

[@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

[@mr.iforgot3062]

The thrust compound systems were transponding to teleportation device linking video feeds

[@karlosmontoya459]

Year 2356. Captain I have detected an anomaly on a nearby comet. It appears to be a primitive probe of some kind. That's weird, because the of the 3 planets in the habitable zone, two are way too hot to support life and the 3rd has very little atmosphere...

[@gastonhitw720]

it almost seems like life is as abundand in the universe as we thought, not every life molecules end up in hitting a planet like ours, but it's still amazing

[@RichardBurr-Carrothers]

My hat is off and my head is bowed, We need this! Space exploration must do more than stay alive it must thrive if our little ship in space we call home is to remain safe. We control our own destiny and there is no deity, no ephemeral that is going to warn us about an impending impact, it is up to us.

[@TheCarloalberto95]

This is my favourite mission ever! the images are so beautiful

[@Peephole_Magazine]

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

[@tanagra2]

Thank you for creating such a brilliant video, one of my top favourites. I always wander if this water/material is continually ejected how something can continue to do this for millions of years.

[@billywhizz6965]

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

[@Wadethewallaby2001]

5:45 ⚠️ I don’t think it’s a contact binary I think that the comet is melting between the lobes are. The sun is hitting up between the two bulges are eventually as it melts away. The two lobes were separate.

[@witsend177]

Ok so if you know what the exact outgasing mass is at present, couldn't we rewind the comet's path and add back the outgas mass lost to determine the original size of the comet? Couldn't that also help answer if H2O was more prevalent at the comet's origin? Great video!!!!

[@mickimicki5576]

At 5:38 there is a close-up view of the surface that shows at the right side a number of parallel grooves or ridges that cut across large parts of the terrain. On any other body this would be interpreted as exposed sedimentation layers. What could they be on a comet??

[@DoubleMonoLR]

The lines look like an optical effect, perhaps resulting from the very bright spots. They also seem to be perfectly straight, despite the varying landscape, which makes it much more likely that this is a camera/lens issue.

[@alexlubbers1589]

NEOWISE was the first comet ive seen, and it was beautiful. We went out to the desert outside of Vegas and the dust tail arced across the NW sky.

[@cjod33]

It's amazing that the comets appear still just like in the photos.

[@pierrefraisse8610]

This technological and scientific prowess in relation to our inability to live in peace is paradoxical.