Did Life on Earth Come from Space?

  • Published on Dec 6, 2018
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    How did life on Earth get started? Did life on Earth originate on another planet? Either Mars, or in a distant solar system? Could Earth life have spread to have seeded life elsewhere? Let’s see what modern science has to say about the plausibility of panspermia.
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    Life existing on Earth is odd. The oldest fossils are now dated to only a few hundred million years after the moment Earth first became habitable. Is it really reasonable to imagine that evolution turned an unliving chemical soup into the first true living cells in that geological eye-blink? Well, maybe. But the discovery of the early appearance of life on Earth was definitely a big “huh, that’s weird” moment. And it’s inspired some creative thinking. For example, what if the first genesis of life - abiogenesis - is actually incredibly unlikely - so unlikely that it only happened once in the entire galaxy. And that “once” was not on Earth. What if primitive life arrived on Earth after having traveled vast distances across the Milky Way. Some scientists think this is the case. This is the Panspermia hypothesis.

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Comments • 2 333

  • Mass Kreations
    Mass Kreations 23 hours ago

    Technically earth is a part of space and the universe so technically there’s no way it could’ve come from anywhere else

  • William Thomas Ramey

    Really don't like this argument. It's just passing the back. If life could have originated elsewhere and then come here, why not just presume life here originated here?

  • Arda Karaduman
    Arda Karaduman 8 days ago

    About the entry temperature, maybe the early earth atmosphere was thinner, so there was not so much temperature during entry ?

  • Joseph Henson
    Joseph Henson 10 days ago

    Before watching, yes. It did. There is an entire medium of organic particles out there.

  • JJAG3
    JJAG3 11 days ago

    I hate the idea of panspermia. It’s just based on a very anti earth bias. The only evidence we have for this is that it can happen not that it’s ever happened to us. That’s not enough evidence for me. It’s a silly idea that puts you back at the same question of where did life come from

  • Ink Dry
    Ink Dry 11 days ago

    God he's boring...

  • Berad Casteel
    Berad Casteel 13 days ago

    When we go to Mars, we need to take a fuck tone of these with us.

  • Berad Casteel
    Berad Casteel 13 days ago

    Tardigrades can also survive radiation bombardment by excretion of protective proteins. We should send quadrillions of these to Mars

  • Berad Casteel
    Berad Casteel 13 days ago

    So, what you're saying is that we have stars out there masturbating and shooting their panspermia all of the universe? Sounds icky bro!

  • Random Guy
    Random Guy 15 days ago


  • Carlos C3rd
    Carlos C3rd 21 day ago

    Sorry I just read the title and had to comment. Obviously yes, earth is a planet and as such a byproduct of space.

  • Andy K
    Andy K 25 days ago

    1:26 biosphere is spelled incorrectly!

  • USMColdCorps
    USMColdCorps 25 days ago

    Life may---may have come from Mars, Venus, Theia etc. but I simply cannot fathom that it arrived from an interstellar location. As rare as life is, (due to the raretiy of habital real estate, and not because it isn't robust enough) speaking as a Marine sniper it's pretty hard to hit a target over a mile away, yet alone interstellarly?? Ejected material even with all the assistance it can possibly receive, now is at such impossibly greater odds of happening than compared to just formation/creation here from scratch.

  • Joe Norton
    Joe Norton 26 days ago


    SCORPIO Month ago

    Sorry but God of abraham says it did start on earth.

      SCORPIO Month ago

      Earth is in space too dont forget

  • General Goldy
    General Goldy Month ago

    I honestly think we originated from another planet not earth but a entirely different planet light years away

  • cor L
    cor L Month ago

    Why else would human bioclocks not perfectly synchronized with the ≈24 hour Earth Day?

  • Emerald absolution
    Emerald absolution Month ago

    There is more evidence civilization arrived not a product of evolution...

  • Richard Deese
    Richard Deese 2 months ago

    Thanks! Question: how likely is it that life could be floating through the galaxy, and just happen to hit Earth at the earliest possible time for it to take hold - yet, we don't see any evidence of it in the comets & asteroids that hit us now? If panspermia is true, then why wouldn't we still see that life floating around all over the place? This seems at least as unlikely as Earthly abiogenesis. tavi.

  • Zeb Dawson
    Zeb Dawson 2 months ago

    Damn, I love me some free content, but you’ve got a REALLY good point here. Maybe we SHOULDN’T insist on everything being free...
    Either way, I love this channel, I’m very glad I stumbled across it. I’ve been binging these videos for days now! One thing I really like, is in one of the videos (I’ve actually seen 2 so far) you corrected something in a previous video that was less-than-correct after being presented with evidence to the contrary. That takes a massive amount of integrity. Stuff like that earns my subscription. Thanks for such great content!

  • selforganisation
    selforganisation 2 months ago

    Isn't there like a big deal to build artificial satellites in clean room conditions so that we don't send germs in space (mostly because it complicates the search for extraterrestrial life, since any germs we find could be from us)? I'm surprised and hear this the first time, that microbes were purposefully shot into space.

  • Deyvson Moutinho Caliman

    I think that believing life came from somewhere else is as lazy as thinking God created life plain and simple. Life coming from other planet doesn't mean anything and it explains nothing, only pushes the problem away.

  • Frank Andrew I
    Frank Andrew I 3 months ago

    What about the dark night probe

  • Levi Civita
    Levi Civita 3 months ago

    German title but not a german subtitle translation. Thats really bad PBS!...you can do it better :(

  • Roger Kreil
    Roger Kreil 3 months ago

    If abiogenesis only happens once every one decillion years, then panspermia would be necessary for the universe to get life in it.

  • Stephen Nielsen
    Stephen Nielsen 4 months ago

    Haven’t some microbes been found on used nuclear fuel rods?

  • Lucius Chiaraviglio
    Lucius Chiaraviglio 4 months ago

    Radiopanspermia also wouldn't work because anything light enough to get blown out by the solar wind and/or radiation pressure of the source star won't be able to make it in through the solar wind and/or radiation pressure of the destination star.

  • willbreaker 21
    willbreaker 21 4 months ago

    Humanity are not bacteria...

  • Ken Hardie
    Ken Hardie 4 months ago +1

    If DNA or RNA life is found elsewhere in our solar system then it may well be more universal than unique

  • Naͣfiͥsaͣhͪ Oury Bah
    Naͣfiͥsaͣhͪ Oury Bah 4 months ago +1

    I feel the narrator may be an E.T, those gestures 🤔😂

    • Owen Marble
      Owen Marble 2 months ago

      You must seem very funny to people who aren’t very funny.

  • Shaman’s Point of View

    Hey, I had to re subscribe, just thought I’d let your team know I was auto unsubscribed.
    Life your show, wondered why I wasn’t being notified.

  • E Loesch
    E Loesch 4 months ago +1

    The seeds of life are spread across all Spacetime, but your soul came from Yahweh.

  • SeaJay Oceans
    SeaJay Oceans 4 months ago

    I am thinking anyplace life CAN exist, it WILL exist - Earth itself being my test case as proof. Energy+Water+Minerals = Life.
    It's just how this instance of Universe exists.

    DADDY 5 months ago

    This would mean that there could be life with a common ancestor as humans on another planet

  • J. B. Wagler
    J. B. Wagler 5 months ago

    So what about us causing "pamspirmia" by launching a vehicle toward a likely habitable planet?

    • Charles McMillion
      Charles McMillion 5 months ago

      @J. B. Wagler Oh, ok. Of course, the problem is travel time. The time to get to even the nearest star with conventional propulsion technology is around 70,000 years.

    • J. B. Wagler
      J. B. Wagler 5 months ago

      @Charles McMillion I meant intentionally. Purposely trying to get an ecology started on an exoplanet.

    • Charles McMillion
      Charles McMillion 5 months ago

      That's why we sterilize probes.

  • Russian Bot
    Russian Bot 5 months ago

    Fact: NASA spends 190,000 $ on fuel to account for the weight of spores-and bacteria on the body of the rockets.

  • Russian Bot
    Russian Bot 5 months ago

    4:58 souls going to heaven

  • Demetrio Guerrero II
    Demetrio Guerrero II 5 months ago

    I like this

    ALT SOLUTIONS LIMITED 5 months ago

    Everything here on the planet came from space and 4D.

  • Jon dough
    Jon dough 5 months ago

    Earth and Space but still not proven if that started our beginnings..

  • goodtasteification
    goodtasteification 5 months ago

    I agree Space came from Life on Earth

  • Blitz FromBehind
    Blitz FromBehind 5 months ago

    Several hundred kelvin you say 🤔 so a pleasing 26,87 celcius 🤔🤔

  • Gambit JL3
    Gambit JL3 6 months ago +1

    The topic that life came from outer space or started on our planet should almost be irrelevant. We should still be asking how life started. Weather it started here or somewhere else shouldnt really matter as how life started at all is the big question we should still be asking. Doesnt really make a difference where life on earth started as if we come to the conclusion that it did come from an asteroid or from panspermia still leaves the question of how it started at all. We know pretty much what it takes for life to start for the most part but lack a few ingredients or conditions to replicate it our selves. When we figure that out then where it begun will maybe be more important then. Also we have no clue on how many different ways life can evolve, form or even what different kinds of Life are made up of as we have speculated and have many different opinions but we sure don't really know. Once we get out there and actually see what's around the actual universe we may find that there are all kinds of different ways life has formed and all different matters of chemical makeup. either way in my opinion our main question should still be how life formed first, once we figured that out then where it formed will actually be much easier to determined and then maybe be a little more important..

  • AzurePrince
    AzurePrince 6 months ago

    1:23 Misspelled 'biosphere'

  • James Armstrong
    James Armstrong 6 months ago

    LIfe came from blue ice by a passing spaceship - Aliens call earth the poo planet.

  • Ted Phillips
    Ted Phillips 6 months ago

    When are we going to get past pre-1905 thinking ? Just because life appeared in the past does not mean that's when it originated. Now that it has been mathematically shown the topology needed for a black hole to act as a pathway to the "past", we have to consider the intelligence behind intelligent design may turn out to be that of our descendants.

  • Adithya Pradeep
    Adithya Pradeep 6 months ago

    Lol when planets like earth eject rocks containing microbes into space due to collisions with other objects it's basically a planetary ejaculation

  • Olof Eriksson
    Olof Eriksson 7 months ago +3

    This channel is awesome! SO glad to have found it. Thank you so much for making all these informative and interesting videos!

  • Yunus Emre Aydemir
    Yunus Emre Aydemir 7 months ago

    as a non natıve speaker of englısh ı found thıs vıdeo and topıc hard to understand. but even ıf ıt ıs, It worths :)

  • Finbar Manley
    Finbar Manley 7 months ago

    Ur videos ate shit just put dory on to say sorry

  • Finbar Manley
    Finbar Manley 7 months ago

    Spinning a light spun orb and swapping left and right side so it spins for ever will make crush smaller proportionate spinning in equal and opaite will give boyancey binary is the onley thing that needs to be invented for easy split second swaps firing a red lazzer beam to find silver in sixty degrees folding where orange occurs hmmmm no no just when silver its 9 minutes into fireing the lazzer other colour is purple

  • Finbar Manley
    Finbar Manley 7 months ago +1

    I'm so proud I got dory the job what a guy I like dory

  • Finbar Manley
    Finbar Manley 7 months ago

    He's a cool guy I like him you see every one likes him

  • Finbar Manley
    Finbar Manley 7 months ago

    81 beats per minute ask who dory is every race will sleack at once

  • JF Barnard
    JF Barnard 7 months ago

    What if the aliens just sent small spaceships containing lifeforms from their planet and one landed on earth. We then unknowingly evolved from that and in the future will be sending our own spaceships contaminating other planets and repeating the cycle

  • Jay
    Jay 7 months ago

    Life came from God, Jesus Christ appeared to me

  • Harles Balanta
    Harles Balanta 7 months ago

    Panspermia from Mars, I heard Mars use to have a magnetic field and liquid water.

  • Li Liu
    Li Liu 7 months ago +1

    So.. We are not “Earthlings”!

    • Li Liu
      Li Liu 7 months ago +1

      We are aliens invading earth?

  • EozTheNew
    EozTheNew 7 months ago

    Of course panspermia doesn't "explain how life first arose". That's not the point. The point is to attempt to weigh which is more likely: multiple unrelated instances of life developing in the galaxy, or a single instance of life followed by multiple panspermic events. That is to say, whether it's harder for life to arise in the first place (therefore panspermia can explain the widespread presence of living organisms in space) or if it's harder for life to escape its native celestial body (in which case independent abiogenesis events greatly outnumber panspermic events).

  • EozTheNew
    EozTheNew 7 months ago +1

    It's neat that Chrono Trigger and Final Fantasy VII took note of cryptobiosis and used it as inspiration for Lavos and Jenova respectively.