Why Astronomers Are Not Looking for Yellow Planets

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#astrum #astrobiology #extremeophiles #microbes #aliens #biochemistry

[@Amadeus451]

The sad fact is physics has us locked in an unhelpful light cone. Due to the time delay for light to cross the abyss between star systems, we're only ever able to see things as they were several thousand or million years ago. Think about how Earth was in that time frame; we'd look like an empty planet to any other extra-solar civilization, and they'd look much the same to us, presumably.

[@TerranIV]

We have so much yet to discover in our own Solar System, and there is more physics (quantum gravity?) still yet to discover. We don't even fully grasp what Time and Space ARE, so I think it is a bit too soon to say we will never figure ways how to travel through them to explore as much of the universe as we have energy to explore.

[@Mark_Bridges]

A million years ago we'd look like an empty planet with a suspiciously high oxygen content and other strong biosignatures, so any alien having a good look at Earth would infer life existed here. As we would if we found an earth-like planet elsewhere. So far we haven't even found that.

[@EivindSkau]

Earth has been teeming with life for hundreds of millions of years…

[@mbbm96]

​@@Mark_Bridgesdinosaurs went extinct 65 Million years ago. So a Million years ago Earth would not be empty at all. This means that a hypothetical alien civilisation on a Planet 65 million light years away looking at Earth would see it as it was back when the Asteroid hit. For context, 65 Million light years is pretty damn far away. The milky way is roughly 100000 ly across, Andromeda (the closest galaxy to ours) is around 2.5 Million light years away.

[@mbbm96]

@Amadeus451 you are right about the delay caused by the incredible distances in the universe, however you forget the unimaginable age of it. 13.7 Billion years to our current knowledge. A lot of theories suggest that we might be kind of late to the party, and lots of life and even civilisations that probably once existed are already extinct again. The theories are based on when after the big bang conditions in the universe were ideal for Star and Planet formation, as well as availability of heavy Element and so on. This time seems to be a few billion years in the past. If this is the case, even when looking at planets far far away with life that has perished long ago, we could still observe it. Just like in the future, Aliens might discover Earth and humanity even though we destroyed ourselves long before they even appeared.

[@nathanddrews]

I forget which recent video I watched (edit: it was Mark Rober's video about his Octopus Maze), but it discussed octopuses (octopi?) being the closest thing to aliens on our planet. The premise is that they broke off from the evolutionary path so long ago, that their level of intelligence and physical abilities are unique compared to all other members of the animal kingdom. To be clear, no one is saying that they are actually aliens, just that they are so incredibly different in every way.

[@christoslumiere2558]

octopussy

[@crableah]

@@christoslumiere2558most intellectual youtube comment

[@kingofflames738]

Similar with mushrooms compared to plants since mushrooms have also split extremely early in the tree of life.

[@stephanieparker1250]

It’s octopuses , even though it sounds weird lol

[@ussarng4649]

​@@kingofflames738 mushrooms are neither plants or animals but are fungi. Mushrooms are neither plants nor animals. They constitute their own kingdom: the Fungi. These include the familiar mushroom-forming species, as well as yeasts, molds, smuts, and rusts. Few of us see the entire life cycle of mushrooms, since most of it takes place underground or beneath the bark of dead or living trees.

[@captain_context9991]

When people tell me the universe was literally DESIGNED for life... I often remind them how hard it is to even get to our own moon. EVERYTHING wants us dead.

[@elagabalusrex390]

True. My impression after years of reading about it is that life of the Earth-like kind is very rare, maybe exceedingly rare in the universe. And that even if intelligence exists out there the bare distance will probably forever prevent any contact between us. 🤔

[@commissaryarrick9670]

I would counter that by saying just on our one planet there are millions of different lifeforms . If that much life can form on just one planet surely the universe is full of life . We just aren't smart enough to find it

[@MrPakurfulo]

Humans ≠ Life

[@kingofflames738]

Yeah, it's more that the universe is perceived because of life.

[@DeadBaron]

I mean duh, my car is designed for the roads, but everything could kill me when I'm driving. Everything has a cause and effect.

[@laynedoe3455]

The comment section taught me just as much as the video did, yall are smart af

[@rocinante4609]

We dont often talk about the effects of gravity on life. I wonder how life would have evolved here under different gravity conditions. Since we are looking for life on other planets with potentially very different gravity we should take into account how gravity affects life and evolution. Life on alien worlds could look so different that we may hardly recognise them as lifeforms.

[@MorphSenior]

I've wondered the same thing... For example, how strong would gravity need to be to completely rule out species that could fly? Would higher gravity make it more difficult to leave the ocean and come on land? Could deep sea creatures that live under enormous pressure here on earth give us a glimpse of what high gravity life may be like? I hope that one day we can find out.

[@peagames2002]

@@MorphSenior I think only option would be to help speed up that planet's own ecosystem, letting the creatures figure out how to deal with gravity.

[@aserta]

When i first learned that Terra used to (likely) be purple, i laughed so hard. I think it was some years ago and for some reason i couldn't help but associate it with Grimace (way before the shake craze).

[@stephanieparker1250]

So, I’ve always loved your videos but last month or so your videos have stepped up a new level of awesome. I’m enjoying the more detailed science! 🤗🤗

[@johnevans1724]

Really enjoying the new videos, been watching since covid but there’s a clear step up with y’all’s recent uploads, well done lol

[@samedwards6683]

Thanks so much for creating and sharing this informative video. Great job. Keep it up.

[@jackbuff_I]

<a href="#" class="seekto" data-time="475">7:55</a> to me that is something akin to actual magic! I've always wondered and pondered on the fact we make VitD from sunlight and thought that THAT could be straight out of a SciFi novella!

[@colbyr7811]

You know what else could be straight out of a sci-fi movie ⁉️ deez nutz 🗣️ cuz they're so huge (I have a tumor)

[@benmcreynolds8581]

Once i learned about Bacteriophages, I couldn't help but be curious about them. Phages are the most abundant thing on earth. They are viruses that transfer info into bacteria. They look like nanotechnology. Something straight out of a sci-fi movie. It makes me wonder, what if certain things are capable of being in different places around space? If not, if they started here, could they transfer to other areas in space? Do they & other viruses play a role in life evolving and adapting?

[@zelo6237]

more accurately they replicate via injection of their genome into bacterial hosts, oftentimes leading to the explosive lysis of the bacterium due to the sheer number and mass of progenies! (kind of like how some insects lay their eggs inside of other insects) the more we uncover secrets of the microbiological world (hidden in plain sight!), the more astounded we become from the seemingly invisible alien world that has been among us since before the birth of civilization! as you mentioned, with their sheer biomass you could even say we live among THEM!! 😅

[@zelo6237]

also it is very reasonable to expect earth's long-standing extremophile organisms to survive on other planets, if not thrive even. we've seen how tardigrades survive exposure to vacuum and outerspace radiation! i have no doubt they'd be able to survive at the very least on a few planets

[@Mark_Bridges]

How would something from here 'transfer' to elsewhere, ie. get out of Earth's deep gravity well? I know rocks can do that after a large meteor strike, but it seems impossible for living things to survive the meteor impact from a close enough distance to be thrown into space. Maybe it is possible in some way, but it seems improbable.

[@zelo6237]

@@Mark_Bridges a full answer to that question involves maybe a bit too much imagination, but there are scenarios where it is definitely possible. an easy example involves the significant amount of junk we have left in space, and while most of it is in earth's orbit, it's not unrealistic to think some mass could travel elsewhere whether through human error or natural events

[@thetobi583]

​@@Mark_Bridgesyou were right, and then derailed yourself by thinking too big. We're talking the micro scale here. There's no way anything bigger would be able to survive an impact capable of ripping a semisolid chunk of earth, let alone surviving interstellar space. Microbes have proven resilient enough to be ferried around the universe on pebbles. A cockroach? Definitely not. A cute lil water bear? Absolutely.

[@thepartysjustbegun5557]

My daughter is six and when she overheard me starting this video she told me she loved this channel ☺️ what's not to love?

[@matthewboire6843]

Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” - Arthur C Clerk.

[@k.scheer5to1]

"Clarke" with an 'e'.....

[@matthewboire6843]

@@k.scheer5to1 it has been fixed

[@dunodisko2217]

I wonder at what point the balance of methane and oxygen in the earths atmosphere was just right to light the entire atmosphere on fire

[@StumpfForFreedom]

The most exciting part about space travel is having the ability to turn whole worlds into giant fireworks.

[@garrettcasselman647]

Idk if it would’ve ever been THAT much, just enough to make any spark cause huge explosions

[@garbagedaycleveland]

❤❤❤ thanks for your wonderful insights and soothing voice

[@keithlutman5611]

Absolutely brilliant stuff. There is so much to learn.

[@user-mp3eh1vb9w]

I wonder if I would still be alive when space tourism is as accessible as owning a car.

[@spencerwiltse2855]

I think about stuff like that on a regular basis. Also it would be great if we were able to transfer our consciousness in my lifetime lol live on as robots

[@lieutenantshibby]

​@spencerwiltse2855 how about growing a new vessel and transferring consciousness to that

[@jackbuff_I]

If you're not, you'll get the same effect for free! I asked my dad on his death bed what he'll do when he dies, and he replied he'll be _"skipping through the stars forever"_ ... I've since absolutely loved the idea 🌟

[@JRQUION]

Maybe it is? Just not for us.

[@oatlord]

No. Not unless aliens land and give us secrets.

[@jansenart0]

If I was an intergalactic alien tasked with looking for signs of life? I'd go right to the heart: Sag A* is visible from most points in the Milky Way Galaxy in some way or another, so it seems like a natural rallying point or hub, at least a few light years out.

[@josephmatthews7698]

I've been to sag a. Incredibly barren just a bunch of very dangerous blackholes.

[@TheJeremyKentBGross]

​@@josephmatthews7698Yeah but the food was alright, and the music not to terrible.

[@PerfectSense77]

The galactic core is an irradiated wasteland. It’s the least likely place for life in the galaxy.

[@-MeatsOfEvil-]

​@@TheJeremyKentBGrossAnd don't get me started on travel prices.😅

[@auntvesuvi3872]

Thank you, Alex! 🦠

[@Voidwalker093]

That sponsor eight sleep sounds amazing, I'm always too hot or too cold at night. Wishing you all a cool pillow tonight 😊

[@GamingRobioto]

Yet another superb video

[@JFBBB535]

Amazing content 👌

[@Beryllahawk]

Great video!! I can't help but giggle about the idea of purple planets though, my silly side just had to ask me: "So are there purple people eaters?" These are really fascinating possibilities. The Nautilus and HabEx are both super exciting too, and I also hope they get approval. We've been wanting - NEEDING - to get some kind of array in place that lets us have an effective "mirror" bigger than the Earth itself, for decades. I'm interested to hear more about Nautilus in particular, I'd imagine that they're going to need some very clever ideas to handle energy needs - an array like that probably wants adjustment to maintain position FAR more frequently than Hubble or Webb. Ion engines might get them into place, but I don't think those are so good for fine adjustment, correct? So there would need to be rocket thrusters of some sort? Which then implies the need for a mass of fuel, and the further problem of running OUT of fuel at some future point. But I wonder if we finally have something other than rockets for that task (that is also cost effective and sturdy). So much to be excited about!

[@spacetomato1020]

Astrum you should do a video on abiogensis, like the RNA world hypothese or the panspermia hypothesis

[@HardRockMiner]

This has never been a puzzle to anyone, even remotely intelligent. It is obvious that the egg came first. The chicken evolved from a dinosaur, THAT LAID EGGS.

[@siimkask14]

Where the dino come from

[@HardRockMiner]

@@siimkask14 - An egg. Thanks for helping prove my point.

[@lexacutable]

it's so weird, a passing knowledge of genetics makes it clear the egg came first

[@HardRockMiner]

@lexacutable - Agreed. The whole chicken of the egg thing is riddle for elementary school kids.

[@hyacinthpixie8054]

I hope HabEx gets approved. Would be cool to have a giant sunflower in the sky.

[@dl200010]

Astrum has quickly become one of my favorite channels! I love science!

[@dancingwiththedogsdj]

Do you have other favorites or need/want any suggestions? There's lots of great stuff like this with proper information and all! I always try to watch a bunch of different viewpoints and/or just ways of describing the particular phenomena just because I may love one and yet another says it a different way and then it'll go "click"! Oh, now it makes sense!! Have a great evening!

[@dl200010]

@@dancingwiththedogsdj If you wish to suggest, then I will listen. I follow many science and engineering channels.

[@dancingwiththedogsdj]

@@dl200010 Anton Petrov, Dr. Becky, Fermilab, Launchpad Astronomy, Event Horizon, John Michael Godier, Smarter Everyday (and the 2nd channel for longer versions), and others I'll try to add in a bit when I double check all of them or I should have my subscriptions public if you want to just scroll through those. Have a wonderful evening!

[@dancingwiththedogsdj]

Oh I can't believe I overlooked this video! I know it'll be interesting and properly informative. I'm glad this channel hasn't gone through the crazy changes like some other channels I USED to love watching.

[@TheTamriel]

The problem with halophilic archaea is that independent of their astonishing ability to survive under extreme conditions like space, they need a warm liquid brine pool (~35°C), usually on the 4°C cold seafloor, to thrive on chemosynthesis (hydrogen sulfide, methane). Higher eukaryotes like deep sea molluscs live in symbiosis with the halophilic archaea exclusively on the border of the brine pool whose alkaline water is deadly for any aerobic lifeform.

[@nicholasmacnaughtan4492]

Please could you do a video on radiosynthesis and the possibility of life utilising this outside of earth. Your video's are amazing, thank you.

[@jamespkinsella5018]

Super explanation.

[@BernardoMartins_]

Amazing video, as always, complete and clear. Great channel!

[@uydagcusdgfughfgsfggsifg753]

At the point where I’m excited for new uploads - Probably watched the last 3 hour video 2 dozen times+ now (always dozing off, perfect sleep vid)

[@darksquirtle3041]

I would be excited too if I got to try a 3.5k mattress cover. I'd love to know how it does in summer and does it have °C or just imperial units?

[@tbounds4812]

Right in time for my bed time

[@Ms-Fortune]

_“How rare and beautiful it truly is that we exist.”_ _- Sleeping at Last (Saturn)_

[@Admiral_Lynx89]

Good to know I'm not the only one who took one look at that last proposed satellite CG image, and thought "That one is called the 'Sunflower' for sure." I love the look of that one, and aside from Nautilus (which looks too demanding on energy reserves for their needed coordination precision without some sort of posable magnetic frame) I really would love to see these all approved, too.

[@tyapca7]

I couldn't resist . At <a href="#" class="seekto" data-time="80">01:20</a> "Is There Anybody Out There". Pink, maybe? ;-)

[@tyapca7]

Maybe, just maybe, Floyd wasn't well, he stayed back at the hotel... :-)

[@spawnofapathy]

I’ve honestly wondered if life on planets is rare enough that we are hundreds of millions of years after the last sentient species or even just complex life evolved on a distant planet and hundreds of millions of years still until the next.

[@captain_context9991]

Yes exactly that... Is actually going on. But there may be 10 000 stars between us and the next life form that walks around and runs its own space program. Life existed on this planet for some 3 billion years before life on this planet started to talk and buy phones. The entire universe is "only" 4 times older than that.

[@shifusensei6442]

I'm convinced sentient life exists out there, it's just rare enough that the scale of the universe makes it practically impossible for us to ever encounter it. Along with the fact that humanity as we know it has only been around for a couple hundred thousand years and there seems to be some kind of mass extinction event every couple hundred million years. It's possible that we've barely missed contact because they've just been wiped out, or we will barely miss them because we'll be wiped just before they make contact.

[@captain_context9991]

@@shifusensei6442 Yes humanity as we know it, has only been around for a very, very short time. And there may be 10 000 stars between us and the next life that walks, talks, and runs its own space program. Or 100 000 stars.

[@spawnofapathy]

@@shifusensei6442 and even if we detect signs of other complex life or a civilization roughly as advanced as us, because of the distance and time it takes light or anything to be detected by us they could already be wiped out by something.

[@globalheart]

More than intersesting, thought provoking and informative, your videos are always beautiful in visual appeal as well !! Thank you for yet another great!! ❤

[@lesliesylvan]

Curioius about the "industrial" complex-compounds supposedly found. Have they been verified and what are your thoughts. Thanks!

[@bobvanbutselaar]

<a href="#" class="seekto" data-time="450">7:30</a> - <a href="#" class="seekto" data-time="570">9:30</a> This puts Purple Rain into a whole new perspective O.o

[@cristopherj1324]

"Because they are prettier! 🌎💜✨" Should be enough of a reason.

[@KarldorisLambley]

i am intrigued by what a company selling heated mattress toppers can offer to a video about exoplanets? do you suspect these planets may use them?

[@MongoosePreservationSociety]

Whoa! I have 8 sleep pod. Highly recommend!!!!!!!!

[@paulhaynes8045]

One (possibly critical) question that always bothers me, but I've never heard answered: "did the extremophile life forms we find on Earth evolve in those extreme environments - or did they evolve in a much more benign environment and then adapt to survive in more difficult situations?" The answer to this question has a massive impact on where we look for signs of life, because, if these life forms evolved in a benign environment and then mutated, it reduces the places we need to look greatly - to just one, rather narrow, range of possibles. Personally, I think the uniqueness of Earth (especially having such a large satellite) so unlikely to have occurred more than once, that, even given the almost infinite scale of the universe, it seems likely that life has probably only evolved a very few times, possibly only once. If you factor in the huge distances between us and the observable stars, with 'distance' = 'time', and reduce the visible universe down to the tiny part that is actually close enough to us to be considered 'real' (ie that it has a reasonable chance to still exist, and be roughly in the state that we observe), this seriously increases the likelihood of Earth's uniqueness, and therefore the chance of life evolving elsewhere, to practically zero.

[@Mark_Bridges]

Life elsewhere, one of 'our' greatest unanswered questions. I tend to think the uniqueness of Earth, as you put it, is offset by the likely trillions of planets in the habitable zone of their star. With that many planets there has to be some that are similar to Earth, therefore surely some of them evolved life of some kind. In reality, even if we discover strong biosignatures, we're unlikely to encounter intelligent scientific life advanced enough to talk to us. If it existed we likely would have seen its radio emissions already (yes, there are a lot of assumptions in that sentence). I think we have to reluctantly accept the universe is a fairly lonely place.

[@novavortex7763]

​@@Mark_Bridges If what you say is true then Humanity is extremely strange... I like to believe there is a lot of life out there both intelligent and not, I also believe we can't find any because we're looking in all the wrong places. Saw a video about an astronomer answering questions, she said we just started looking it's to early to jump to conclusions to say we're really alone.

[@genghisgalahad8465]

Prince would have loved this Purple Rain 🌂 🌧 💜 ☂️ ☔️ of Purple exo-Planets! 🎉 🎤 🎸

[@Ericaodd]

Purple Earth is a great band name...

[@musicilike69]

There are so many variables..but also life is so adaptable. Look at Tardigrades. We just don't know enough. We can't even define where the parameters are for the possibility of life. Can Silicone lifeforms exist and what bio sign would such a thing create if any?

[@cptrelentless80085]

You cannot form long chains from silicon, so no.

[@nickraschke4737]

Prince would be thrilled.

[@plazmikpond]

I LOVE LEAN!!!!!!!! 💜💜💜💜💜💜💜💜💜

[@MtHermit]

Does anyone have any other science channels to recommend? I love this channel and would love to watch videos of a similar quality and validity. I've been trying to find some more but there are so many AI channels in the science genre. Thank you in advance

[@seek.l2215]

Look up Anton, he does plenty of interesting space vids, same with Sabine

[@MtHermit]

@@seek.l2215 Thank you very much. I'll check them out

[@Ceres_5]

Kurzgesagt: In a Nutshell, VSauce, Kyle Hill, CGP Grey, Minute Physics, and Minute Earth are all really good science channels that I would absolutely recommend.

[@MtHermit]

@@Ceres_5 Thank you for the recommendations.

[@terrencebair]

Sci show, PBS

[@TheRealQuartz]

I think it's smart to use our planet as a way to find CARBON based life, where as finding any life would be kind of challenging since life could form in almost any planet with an atmosphere and a magnetic field.

[@Toastcat890]

Purple happens to be my favorite color

[@martinriley106]

Space pioneering is the future!

[@lucaweatherdude_6542]

Best space channel on youtube!

[@F_L_U_X]

Ah, young Padawan...

[@deadlypyre]

​@@F_L_U_Xwhat is padawan

[@plf5695]

We are lifeforms interested in finding other lifeforms on other planets, but at the present rate of environmental destruction soon there will not be any lifeforms on earth able to study if there are any other lifeforms on other planets in the universe. - Pierrot Armanno, writer.

[@123seven3]

Okay but why not yellow planets? Neat video but I didn't see anything that would prevent or invalidate looking for a yellow planet. I don't think you even said yellow once, man.

[@lastbestplace8112]

should look into the Purple Dawn of creation theory

[@Patrick_Cooper]

Have you ever played the game, No Man's Sky. I would be interested in what you think of the Galaxy/Star/planet types that the game has.

[@Some_Cat_]

When you said "home" at <a href="#" class="seekto" data-time="207">3:27</a>, the hairs on the back of my neck stood on end. 😨 (👽?)

[@rnanerd6505]

One word of caution - extremophiles on earth have *adapted* to those conditions. It doesn’t follow that life could *arise* in those conditions.

[@thekingofmojacar5333]

Really interesting topic and beautiful ilustrations Astrum, thank you Alex! Our life here on planet Earth probably originated somewhere else in space. Today we know that the fundamental building blocks of life arrived in the inner circle of the solar system about four billion years ago via comets and asteroids. Then they settled on Mars, Venus and Ceres - conditions on Earth weren't exactly the best due to the geological activity and toxic environment. Mars in particular was a paradise for emerging life and even today we can still find a few mysterious traces on the surface of our red neighboring planet... ​

[@Mark_Bridges]

We know no such things, your post was all conjecture. Except your compliments to Alex on the video, I agreed with those, the rest was just misinformation.

[@jonathanrossroberts]

That cover for your sponsor seemed really nice until I saw that it cost more than most cars I've bought in my life.

[@SuperGreatmonkey]

I wonder if some day we could see what is floating around distance planets. We humans have put a lot of space junk into space and it now orbits the Earth, that should reflect/block some star light, I would think? And we also need to find a way to clean up that space junk as well.....

[@ericsmith6394]

Probably not unless they had extreme Kessler syndrome or deliberately built a space signal mirror to get our attention. We barely get atmosphere info and that is from a solid ring around the planet.

[@mobyvic404]

Shoutout David Talbot

[@georgesimon2730]

Could you please make longer videos. It's just not enough time for me to fall asleep. I'm just watching the damn thing.

[@OldClassTreky]

Are there extremophiles on earth, that could survive venus? And if not, could we engineer them l?

[@jacksondodd8835]

MAKE LONGER VIDEOS!!!

[@daviddamascus9657]

"Look at how much more water Mars, Encelidus, Triton, etc, etc has than Earth." Poor Earth. Always getting water shamed. 😢

[@triplebog]

Are extremophiles really the things we should be studying as an example for what life could be like on exoplanets? I feel like extremophiles exist on earth because earth is otherwise an extremely welcome place for life. This allows for extremophiles to slowly encroach and evolve to fit their extreme environments. But for all the reasons that extreme environments are extreme, so are the reasons that those environments probably wouldn't give rise to life.

[@chattywalrus8485]

Because they have touristic value; I'd totally go live on one.

[@martinriley106]

I have dreamed for years that someone would find life on another planet or celestial body, even if it is primitive, that would be enough to open up the whole universe.

[@-MeatsOfEvil-]

Did i miss the part where he states why scientist are not looking for yellow planets?

[@WhiteOwlOnFire_XXX]

Commenting for the algorithm…….

[@martinriley106]

Surely being many light years away from these planets you look for a planet with more primitive like atmosphere?

[@Mark_Bridges]

Earth has had multicellular life for millions of years. We can't investigate planets millions of light years away, so realistically we're seeing planets as they were only a very short time ago compared to the age of the universe. Having said that, Earth's history indicates a planet spends much more time with primitive life than with advanced life, so that makes you right anyway.

[@YRLCarlos]

remember the earth wasn't green before, it was purple

[@3X3NTR1K]

If we start finding purple worlds with basic forms of life, I think we should call them Noble Worlds. Borrowing a bit from our old symbolism of exepsive purple dyes.

[@lexacutable]

I clicked cos I was honestly curious what it is about yellow planets... did I just miss the part where the video answers the question in its own title

[@AceSpadeThePikachu]

Considering how quickly life on Earth formed, how hardy said life was and how many worlds there are out there with conditions roughly in the range that the most resilient extremeness on Earth can handle, it would be REALLY strange for us to NOT find microbial life everywhere in the galaxy. Complex, or even intelligent life though might be a lot less common because of the series of events that need to occur and the amount of time with stable conditions required. Earth had simple microbial life pretty much since the frist solidified, but as far as we can tell multicellular life only came about around 600 million years ago (out of over 4 billion years), and intelligent life (humans) only came on the scene a few tens of thousands of years ago. We've only been blasting radio transmissions into space for about a hundred years. So if I had to put money on it, I'd say we have a good chance of finding microbial alien life within the next twenty years, maybe sooner. Finding technologically advanced life is probably going to take a loooot longer.

[@alasad3136]

I wanted a like, but i don't know what to comment

[@Gadoxplayer]

❤

[@FirstNationsPisces]

The universe has only given us humans one planet to survive on and when we destroy it that’s it! Yes I do believe and agree that there is other planets that exist for life but it’s not our planets it belongs to other life forms!

[@Dragon1276]

Humans don’t even recognise other intelligent life on Earth, and what we’ve done to life we do recognise as intelligent……... We better hope and pray that we are alone in the universe because the BEST possible scenario is that we are found delicious enough to farm.

[@jordanhicken7812]

Is “seeding” Mars with life viable in the far future?

[@metal7core]

In NMS we call those planets "Dissonant" 😏

[@Voidwalker093]

Hope to see you out in the black commander o7 lol

[@tjbruds4701]

heartiest

[@Kwauhn.]

EXPOSE-R is kind of a funny name for an experiment apparatus. I hope the bacteria gave consent 😂

[@andrewjack31]

That sleep pod looks genuinely amazing but £2,095 is more than I take home in a month 🤣 I'm glad there's some rich folk out there getting some sweet sleep though. I'll just make do with my £50 mattress topper from Factory Outlet I guess 🤷

[@Ssssuuuuupppppppeeeeerrrrrr]

I must be an extremephile bcus i love me some heavymetal

[@NintendoHighSchool]

THE WINE DARK SEA!

[@lilybertine5673]

Planets with unicorns ! Yes please ! ❤️

[@seagullofchaos6192]

We want something to be out there so bad we'll destory ourselves before we accept that we might just be an: accident.

[@Queequeg61]

“The entire fleet was swallowed by a small dog”

[@jungeichhabdochgarnichtsge2856]

EVE HAS LIFE WE WANT TO BELIEVE

[@MrLewooz]

Gosh! Nothing can survive in a vacuum In the song "turn the page" From the band Rush was wrong....Ghhhhh...

[@DominicDodge]

Never mentioned in this video: tardigrades. You want an extremophile, that's the horse to bet on.

[@daveyr7454]

What puzzles me is this. Earth life evolved to fit in with the conditions here on earth. Those conditions were not designed for us to live in, but evolved, and life was a part of that process. Why then do we continually look for life that is fundamentally like ours, in an ‘off earth’ environment that is totally alien to us. Shouldn’t we be thinking in terms of ‘off earth’ life having evolved to exist in off earth conditions. But we continually look for planets that have the ‘building blocks’ of life. Our life! Which can’t exist off earth. If aliens do exist, won’t they have evolved to fit in with the reality of space, and so be TOTALLY different from our earth form of life? So different that we wouldn’t recognise it as life even if we saw it?

[@boulderbash19700209]

Are you allowed to use scenes from Man Of Steel? Will youtube delete this video?

[@de7Vitaa]

Hallo my fellow friends