The Complete History of the Earth: Archean Eon

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  • Опубліковано 22 тра 2024
  • 0:00 Intro
    2:19 Eoarchean Era
    4:13 Paleoarchean Era
    5:57 Mesoarchean Era
    8:02 Neoarchean Era
    10:52 Outro
    #historyoftheearth #archean #eon #era #lateheavybombardment #PaleoAnalysis
    In this video I pick up where I left off last week with the close of the Hadean and the start of the Archean Eon. Moving forward we will see the Earth move closer to the home we know today and eventually become a suitable home for some of the very first living things! And we will also discuss how those early organisms were actually the first to take over the world! There's a lot of ground to cover in this one, byt the time we get to the end we will have traveled half way through the complete history of the Earth!
    Follow me on Instagram for more Paleo content!:
    / paleoanalysis
    Most of my music has been provided by MehoDrums. If you enjoy any of the tunes in my background or into, check out some of his other stuff and contact him if you want to have him compose some stuff for you!
    linktr.ee/MehoDrums?fbclid=Iw...
    Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.

КОМЕНТАРІ • 348

  • @cooliphoneguy2934
    @cooliphoneguy2934 2 роки тому +633

    I just assumed this was a big channel by how well put together this is. I really like it

    • @PaleoAnalysis
      @PaleoAnalysis  2 роки тому +115

      Thank you so much! Hopefully one day my channel will be big enough for me to go full time! 🙂

    • @jennyanydots2389
      @jennyanydots2389 2 роки тому

      @@PaleoAnalysis I like your channel, I would sacrifice babies for you. Wanna see my rocket ship? (_)_):::::::::::::D --- -- -

    • @ChristmasLore
      @ChristmasLore Рік тому +10

      @@PaleoAnalysis , you could do such series, about evolution of the different species?
      PBS is a hard contender in your given domain, but they're a bit chaotic, and not so chronologically organized.
      What you did with the different eons/ages etc with really great!
      Maybe now the same with big "branches" of the species of each of these eras?
      (I'm a literature nerd, so excuse me if I'm not using the exact vocabulary, but you get the idea, still, maybe?)
      Good luck with your channel, best regards from Alsace, France 🌿
      (We have nice fossils around here, I remember digging for some as a kid with my school)
      (And we had a wonderful "jungle" way back then, with surviving patches here and there - in some form at least)

    • @bassbustingman
      @bassbustingman Рік тому +4

      if i were a teacher i would play this for the kids. Very well made educational and entertaining!!!!!!!

    • @jennyanydots2389
      @jennyanydots2389 Рік тому +2

      @@bassbustingman I'm sure you still love playing videotapes for the kids. You probably love to "educate" and "entertain" them in your basement all the time. You need help bro. Serious help.

  • @TheAshHeritor
    @TheAshHeritor 2 роки тому +59

    A simpler time... A simpler eon.
    I miss the good ole days.

    • @Daniel-jk6ve
      @Daniel-jk6ve Рік тому +9

      Glory to the goooo

    • @Nugcon
      @Nugcon Рік тому +6

      Only Archeanials will understand

  • @hyphenizm
    @hyphenizm Рік тому +35

    If my history classes were this entertaining I would've paid way more attention.

  • @calexico66
    @calexico66 2 роки тому +253

    Given that the moon was way closer, it would be expected that coastal flooding would reach much farther inland. And that higher waves would hit the coast which would spread bacteria and moisture much farther away.

    • @lukestrawwalker
      @lukestrawwalker 2 роки тому +41

      Yes... tides would have been ENORMOUS because of the close proximity of the Moon, and the fact that at the time Earth's day length was much shorter (starting at about 5-10 hours and lengthening rapidly as the Moon rapidly receded, through the angular momentum exchange of tidal energy, slowing Earth's rotation and raising the Moon's orbit, very quickly at first but gradually slowing over time, so day length would have rapidly decreased at first, then slower and slower day length increases over time... SO there would have been MANY more tides since there's more days with shorter day length... Soon after the Moon's formation, there would have been HUGE walls of water as Earth rotated under the tidal bulge, inundating the land for many miles inland of any early continents and submerging entire islands, then receding ever few hours as the tide ebbed, only to surge in again a few hours later... a ten hour day would see the water surge in and recede every 5 hours or so! Even when day length increased to 16 hours, there would still be very high tides surging inwards and outwards every 4 hours or so... that's a LOT of erosion potential, plus creates a lot of environments for cyanobacteria and other organisms capable of surviving the periods between tidal inundations exposed to the atmosphere and solar radiation... These tides would have been MANY times bigger than even the largest tides on Earth today, and with much greater frequency, so this is an environment that really no longer exists on Earth today. Later! OL J R :)

    • @bigedslobotomy
      @bigedslobotomy 2 роки тому +16

      I think these much larger tides (called “tidal bores”) played a significant part in getting minerals from the continents into the ocean where life was forming and evolving. I think the “Cambrian explosion” at least partially arose because a threshold of minerals (especially calcium) was met so that life could begin building shells and exoskeletons.

    • @jordanflores6174
      @jordanflores6174 2 роки тому +5

      @@lukestrawwalker i want to pick your brain on your thoughts about the moons in The Elder Scrolls 🤩

    • @lukestrawwalker
      @lukestrawwalker 2 роки тому

      @@jordanflores6174 I don't know what "The Elder Scrolls" are but if it's a general question about moons/planets/gravitational effects/ tides/ orbital mechanics I can probably answer... OL J R :)

    • @jennyanydots2389
      @jennyanydots2389 Рік тому +2

      Given that the moon was closer the night gRape was probably way more serious back then than it is now. The bee whole's were probably getting wrecked in a more savage and carnal manner back then.

  • @MaryAnnNytowl
    @MaryAnnNytowl 2 роки тому +167

    I finally backed up and began watching this playlist, and your Pokémon evolution sound perked up my 38 year old (disabled) son's ears, LOL! He came down the hallway and poked his head into my room, asking "are you playing Pokémon with the sound up? I heard you evolve something." 😄😄😄
    I then had to explain that no, it wasn't me, and how it tied in to your videos, all the while laughing hard enough it was hard to explain it! 😂😂 It was cute knowing that the Pokémon games are still alive and well in him, even though he has trouble with memory in other ways. 😁

    • @harrietharlow9929
      @harrietharlow9929 Рік тому +1

      😅😅😅😅

    • @coltoncarey7042
      @coltoncarey7042 Рік тому +5

      This made me smile ear to ear

    • @harrietharlow9929
      @harrietharlow9929 Рік тому +4

      I love how he's been evolving from an ethidium bromide molecule and on up the ladder. His experiences with the cyano bacteria and "the glory of the goo" are hilarious.

  • @Colonelguuber
    @Colonelguuber Рік тому +53

    Honestly needs to be a pixar movie directed by you about cute little goo cells trying to turn back into a human again. 🙌🏻

    • @Nugcon
      @Nugcon Рік тому +7

      A pixar style animated movie about evolution sounds sick

    • @robinchesterfield42
      @robinchesterfield42 4 місяці тому +1

      I would watch the FRICK out of that. Give it like, kinda the same writing style as Wall-E or something? With cute little slime creatures? Heck yes!

  • @harrietharlow9929
    @harrietharlow9929 Рік тому +134

    I love this. You've produced a fun, engaging history of our planet (this is my first rewatch of the series). Really enjoying this.

  • @tomhutchins7495
    @tomhutchins7495 Рік тому +64

    Stromatolites are just the coolest things. We found some once, and I geeked out over them. I'm sure my friends found them as fascinating as I did. Maybe.

    • @robinchesterfield42
      @robinchesterfield42 4 місяці тому

      A few months ago I went to the local natural history museum...they have stuff about LITERALLY EVERY PART of Earth there, from the core up to the clouds, including human history and culture stuff along the way...but of course the best part is the ancient life-form fossils. At one point, I was looking at smaller, older fossils, such as imprints of shells and such, and wondering how far back does their collection go? when suddenly I realised the "rock" next to the other stuff, was an actual stromatolite. DUDE WAIT WHAT LIKE I LEARNED ABOUT IN THAT AWESOME DOCUMENTARY WHAT??
      I geeked out SO HARD at that. It's billions of years old! BILLIONS! With a b! And there's one right next to me!
      So cool. :)

  • @nhabib114
    @nhabib114 2 роки тому +40

    There is humor and knowledge here, not overly scientific. I have just watched your previous one, on the Hadean. Liking it.

  • @StormiidaeBlogspot
    @StormiidaeBlogspot 2 роки тому +6

    "The Glory of the Goo" I'm hooked.

  • @the_gaming_hyena
    @the_gaming_hyena 2 роки тому +93

    Excited for an episode on the Carboniferous! Great job!

    • @PaleoAnalysis
      @PaleoAnalysis  2 роки тому +21

      We will get there... Someday... I hope. 👀

    • @PaleoAnalysis
      @PaleoAnalysis  2 роки тому +13

      I've thought about it but I figured I'd need to be a little larger before I could make it worth it to Patrons.

    • @Burnt-malk
      @Burnt-malk Рік тому +1

      I am from the future, it is already out

    • @myblacklab7
      @myblacklab7 Рік тому +1

      @@PaleoAnalysis You did it!
      I love this particular series the most. The others are very good as well, but this series has me hooked. I hope we'll get past "The Great Dying" soon.
      Keep on keepin' on.

  • @TenaciousJ2323
    @TenaciousJ2323 Рік тому +8

    Are you a teacher? You're great at presenting this information. I would have loved to see videos like these when I was in science classes as a kid.

  • @andersdroid
    @andersdroid 6 місяців тому +3

    You’re hilarious. I love your googley eyed characters. The little Cyanobacteria(you) at the end waiting tp evolve, was great. I also love the lack of pseudoscience. Spot on productions. You’ve won me over …“subscribed”. Funny, entertaining and accurate.

  • @shsb2355
    @shsb2355 Рік тому +48

    Just found this channel! I love how you make it like a story with character.

  • @Franklinparkfelines
    @Franklinparkfelines 2 роки тому +3

    "I love you the way you are. Please don't ever change."

  • @AlexVanEks
    @AlexVanEks Рік тому +5

    I love the silly comedic narrator and how there's Timtim and the pokemon evolution screen. These are so super informative too, and explain this potentially boring topic in a fun and easy to understand way 👍🏻

  • @DarkNinjaShark
    @DarkNinjaShark 2 роки тому +10

    Love the Pokémon evolution :)

    • @PaleoAnalysis
      @PaleoAnalysis  2 роки тому +3

      Good! Share my stuff so I can do it again! 😅

  • @meaningoftheunicorn
    @meaningoftheunicorn Рік тому +3

    Educational but endearingly lofi vibe, unlike some of the big flashy channels. Refreshing

  • @stevenborgogna
    @stevenborgogna Рік тому +3

    Word around the campfire is that the isotope distribution of comet ice does not match Earth's water, meaning the origin the majority of Earth's water is still a mystery.

  • @FritoBanditoify
    @FritoBanditoify Рік тому +4

    I’m loving your little avatar’s evolutions in this series 😂

  • @hsdinoman2267
    @hsdinoman2267 2 роки тому +29

    really looking forward to see where this goes, wonder whats gonna happen when you reach the mesozoic era

  • @josefgordon7712
    @josefgordon7712 Рік тому +1

    Learning more from YT than all my years in school

  • @kyleinnes4963
    @kyleinnes4963 Рік тому +4

    Personifying the goo really helps conjure the image of what life was

  • @martinleipzig890
    @martinleipzig890 Рік тому +10

    Perhaps you could do a show on the Shunga Event in Fennoscandia at 2 GA? Basically, did a Precambrian mass extinction give rise to an ancient supergiant oil field? I'm a petroleum geologist who works the Meso- and Neoproterozoic for oil, gas and helium and have spent years on this site. It's not well known, even within the Oil Patch, yet it's something most fascinating and unique.

  • @realityhelix564
    @realityhelix564 Рік тому +1

    That's a really cute way to drive audience engagement. Very creative.

  • @timstadlmueller58
    @timstadlmueller58 Рік тому +12

    This is fantastic, thank you so much for going through the trouble.

  • @jacobkrueger1022
    @jacobkrueger1022 Рік тому +2

    The evolution sequence really sparked some intense nostalgia. Might have to download an emulator later and play some ruby red or emerald

  • @GushOnline
    @GushOnline 2 роки тому +15

    I am thoroughly impressed with your videos. Great job!

  • @suchendelokidottir5673
    @suchendelokidottir5673 Рік тому +27

    This is my second playthrough of the entire series so far. Thanks for the neurotransmitters 😆

  • @meg2831
    @meg2831 2 роки тому +2

    Like Moldy jelly slerking across the ground. lol so wonderfully descriptive

    • @jennyanydots2389
      @jennyanydots2389 2 роки тому

      That's how I've been describing my hot sea men's dripping down the wall after a healthy session for years time now.

  • @chivonfortney1656
    @chivonfortney1656 Рік тому +4

    I'm enjoying and learning. Great job!! 😍

  • @foff3804
    @foff3804 Рік тому +1

    "A moldy jelly."
    Brother bring me the flamer. The HEAVY FLAMER.

  • @TarasMazepa
    @TarasMazepa 2 роки тому +5

    Wow, haven't noticed you only have 1K subscribers. Good luck to you! Nice video.

  • @Scott-wf9kp
    @Scott-wf9kp 2 роки тому +10

    Another great episode! Thanks again for your hard work. I can't wait to see the rest of the series!

  • @seditt5146
    @seditt5146 2 роки тому +3

    Ya got me, the Hook worked, I subscribed :D GL with YT thing my man, you keep it interesting, I like it.

  • @ericbeall7675
    @ericbeall7675 Рік тому

    I’m so glad UA-cam recommended me your channel

  • @Mcgif21
    @Mcgif21 Рік тому

    One of the most convincing subscription pitches I’ve seen in a video

  • @angelmehandzhiyski1050
    @angelmehandzhiyski1050 Рік тому +4

    Fascinating work.
    You, sir, have created a masterpiece.
    Great channel.

  • @imopman
    @imopman 7 місяців тому

    This is one of the best series I have ever seen suited for kids to learn about earth's history.

  • @wanderingspacecritic
    @wanderingspacecritic 2 роки тому +3

    Dude, you’re awesome, thank you.

  • @idristhomas2193
    @idristhomas2193 Рік тому

    I can’t wait to watch this entire playlist. LOVE your videos

  • @serennosquadcast8297
    @serennosquadcast8297 Рік тому +1

    love your intros! love this series!

  • @legoboy468
    @legoboy468 Рік тому +2

    This series is really great, you’ve earned a sub!

  • @brittonkennedy7070
    @brittonkennedy7070 Рік тому +2

    Instantly subbed to you. Great quality content!

  • @Renpet516
    @Renpet516 Рік тому +1

    I can’t stop watching these videos… I’m obsessed

  • @peacepeople9895
    @peacepeople9895 2 роки тому +3

    Awesome series...thank you...

  • @SimonD992
    @SimonD992 Рік тому +1

    These videos are awesome please keep doing them!!

  • @jacobkrueger1022
    @jacobkrueger1022 Рік тому

    Another wave of nostalgia with the spote reference. Naming the greats today lol

  • @gnomepiss8406
    @gnomepiss8406 Рік тому +1

    this series is awesome . thank you :DDDD

  • @skitsfossil16
    @skitsfossil16 2 роки тому +9

    Great video! I do hope you complete this series.

    • @PaleoAnalysis
      @PaleoAnalysis  2 роки тому +8

      Me too! Especially because I would love to become human again!

    • @jacquespoulemer3577
      @jacquespoulemer3577 2 роки тому

      @@PaleoAnalysis or at least a fishy. 🐟 Love the channel. JIM Oaxaca

  • @ashypooh02
    @ashypooh02 Рік тому

    I randomly found your channel through a crocodile video and decided to check it out. I am glad I did. You remind me of so many of my friends. I like the information you present, but the fact that you are such a nerd is amazing and cracks me up. I look forward to future content.

  • @LORENSSIOK
    @LORENSSIOK Рік тому

    One of the most original and entertaining ways to ask for subscribers.
    You sir have convince me to subscribe 😁

  • @maf7742
    @maf7742 2 роки тому

    just to say I'm here before the channel explodes in size :D you deserve it

  • @karenstrange9021
    @karenstrange9021 Рік тому

    I spent ages looking for a video. This one was perfect, you explained so i understood (im a beginer learning this). You gave the dates, you showed the time line perfectly. You made it engaging without making it childish. it was overall fun, easy to understand, just the perfect amount of info and i am grateful. I have subsribed. thank you

  • @alexevans7916
    @alexevans7916 2 роки тому +1

    I really enjoy your videos and I hope many people watch and learn.

  • @jimwu4579
    @jimwu4579 Рік тому +1

    I really enjoyed that intro!

  • @Daniel-jk6ve
    @Daniel-jk6ve Рік тому +2

    You could say we’re all gooooo’d to our screens. This is such a goooood series. Glory to the cyanobacteria!

  • @Ceretrea
    @Ceretrea Рік тому

    This is amazing, keep it going!

  • @orangesnowflake3769
    @orangesnowflake3769 Рік тому

    Thanks for this video !

  • @brainworm205
    @brainworm205 Рік тому

    I never thought I would get that interested in the history of our planet. What a great series, man, keep it up

  • @lukashanewinkel3664
    @lukashanewinkel3664 10 місяців тому

    love the content! please keep posting :D

  • @magicbuns4868
    @magicbuns4868 Рік тому

    I wished I subscribed on this video and not the last,because that's the most creative subscription plea I've had to date xD
    Good videos man!

  • @sauraplay2095
    @sauraplay2095 Рік тому

    Loving this series!👍

  • @nicolasannawn5715
    @nicolasannawn5715 Рік тому

    Excellent video. Really well made. Cheers from France

  • @kingkermit0118
    @kingkermit0118 2 роки тому

    Papa Paleo thank you for this knowledge

  • @johnmalone5693
    @johnmalone5693 2 роки тому +1

    Excellent

  • @viveka2994
    @viveka2994 2 роки тому +1

    Amazing video !

  • @jesseg8172
    @jesseg8172 2 роки тому +1

    Great video 😊

  • @stiofanofirghil1916
    @stiofanofirghil1916 2 роки тому

    Subbed.. These videos are brilliant..

  • @Jesse_Dawg
    @Jesse_Dawg 2 роки тому +1

    I love your videos. You're really smart and I like your presentation. Please make a full series of time on Earth

  • @mccorrect3470
    @mccorrect3470 3 місяці тому

    The avatar evolving is a nice touch

  • @amberm2777
    @amberm2777 Рік тому

    Haha you did such an amazing job with this.. you got my sub, little buddy

  • @patches3432
    @patches3432 Рік тому +1

    I love the random noises the little bacteria are making lol 😂

  • @l.mcmanus3983
    @l.mcmanus3983 2 роки тому +8

    Wow, ethidium bromide sure brings back some memories. I used to add it to gels to visualize DNA, usually from some PCR reaction I had run. I hear there are safer options nowadays that are less like to intercalate with your own cellular DNA. But hey, at least I am not old enough to have played with liquid mercury…

    • @MaryAnnNytowl
      @MaryAnnNytowl 2 роки тому +2

      LOL, I played with it! Didn't eat it or anything, and didn't do it very often, but still, it hasn't been that long ago since mercury was in thermometers. 😉

  • @conanthelibrarian5139
    @conanthelibrarian5139 Рік тому

    Keep evolving brother ❤😊

  • @davidbryden7904
    @davidbryden7904 Рік тому

    I've never been so motivated to sub, but I already have! Ah, a loophole! I can 👍again !

  • @nbahn
    @nbahn 2 роки тому

    "Pray for me." Ha! The animation is quite impressive.

  • @kuitaranheatmorus9932
    @kuitaranheatmorus9932 2 роки тому +1

    Epic video

  • @daniellabonte474
    @daniellabonte474 2 роки тому

    this is awesome

  • @jayaman9142
    @jayaman9142 Рік тому +1

    masterpiece

  • @Gardow
    @Gardow 2 роки тому +3

    Surprised there wasn't a shout-out to the purple earth hypothesis. Still great to have these videos!

    • @KateeAngel
      @KateeAngel 2 роки тому

      There was no reason for Earth to be purple. Among anoxygenic photosynthetics there are as many green bacteria and purple ones. It all depends on proportion of different pigments. And green bacteria are as ancient

  • @phdtobe
    @phdtobe Рік тому +1

    Young Earth creationists need to watch this video series to learn how our ancestors actually evolved over time. I mean, that music that plays during the footage of the evolution events was really important to facilitate the process, amirite?!😛

  • @jacobvriesema6633
    @jacobvriesema6633 2 роки тому

    Haha, I love the Spore reference @5:20

  • @MWSin1
    @MWSin1 Рік тому +1

    As it gets closer to the modern era, the series will cover each period in more detail, until it eventually just becomes a 24/7 livestream of a forest.

  • @duhduhvesta
    @duhduhvesta 2 роки тому +1

    please make a video on the cratons & their names. It really hard to understand stuff without a breakout of the pieces.

  • @xe4330
    @xe4330 2 роки тому

    Sick channel 🔥🦠🔥

  • @OFP_TODAY
    @OFP_TODAY 2 роки тому

    The beginning was great😂😂

  • @charleng6988
    @charleng6988 2 роки тому

    Your a legend for that intro lmao

  • @luappaul21
    @luappaul21 Рік тому

    best subscribe plug ever

  • @_TheCollective
    @_TheCollective Рік тому +1

    cant wait till the end of this series and you've somehow managed to make a compelling plot out of this story and somehow make tim tims death depressing

  • @jeshika22
    @jeshika22 7 місяців тому

    Love this channel, the animations are a funny touch and your narrations are interesting. I just wanted to comment on the green goo slime part though, in the Archean era there was no ozone yet so solar radiation would’ve been deadly to cells, so at this point there would not have been any life on land whatsoever. Any “algae” (Cyanobacteria, stromatolites) would’ve been strictly marine, and probably shallow marine or coastal (shallow benthic), protected from radiation by the water but still close enough to the surface for photosynthesis, and close enough to a coastline to benefit from minerals draining into the ocean via streams and tides.

  • @stephengrant6316
    @stephengrant6316 2 роки тому +2

    Life existed before the cyanobacteria. It was ribonucleic acid and predated deoxyribonucleic acid. RNA was the simplest form of living molecule.

  • @kirithai123
    @kirithai123 Рік тому +1

    i enjoy this sseries

  • @sharonbrookes1188
    @sharonbrookes1188 Рік тому +3

    Can I just ask on what basis ethidium bromide is a building block of life or tied to evolution? I only know it to be used for staining in PCR and such. Google searches have not provided any results for the proposed context.

  • @shanharlmall
    @shanharlmall Рік тому

    The SPORE comment touched me. Best game of the age.

  • @MorbinNecrim86
    @MorbinNecrim86 Рік тому

    This is a brilliant series. (From the future)

  • @SeantheScrub
    @SeantheScrub Рік тому +1

    I thought that there was a less sucessful type of photosynthesis that used a different gas that had the first mass extinction known when photosynthesis started taking over

  • @MostlyPennyCat
    @MostlyPennyCat 2 роки тому +3

    Did abiogenesis occur in the Hadean video or this, Archean video or neither?
    Abiogenesis, the details and theories and evidence, is my favourite topic.
    A detailed video on that would be brilliant

    • @whiteknightcat
      @whiteknightcat 2 роки тому +3

      The Hadean, with the development of organic molecules.

    • @MybeautifulandamazingPrincess
      @MybeautifulandamazingPrincess 9 місяців тому

      There's no real proof of abiogenesis. All of the supposed evidence is extremely speculative with no hard proof
      Panspermia is far more likely to have been imo. Specially with the water coming to Earth in comets, and the constant asteroids colliding

  • @wendydelisse9778
    @wendydelisse9778 Рік тому +1

    In the Archean Eon, the various planets and moons were for the most part close to their modern masses and orbits.
    Meteorites could either add to or take away from the amount of nitrogen in the atmosphere of a planet or moon. Faster meteorites could blast away more nitrogen than they delivered. Larger moons and planets with a higher escape velocity were better at holding on to their nitrogen than smaller planets and moons.
    A crude estimate of the striking speed of a meteorite when ignoring the speed added by a planet's or moon's gravity is the speed at which a planet and its moons travel around the sun. Titan with its planet Saturn travels around the Sun at 9.68 kilometers per second. The escape velocity from Titan is 2.641 kilometers per second. The ratio of orbital velocity about the Sun to escape velocity is 3.66 to 1 for Titan. That ratio is less than a 4 to 1 ratio, fitting a pattern in which objects similar to rocky planets have held on to a considerable amount of atmospheric nitrogen. Titan and Earth and Venus all have partial surface pressures of nitrogen of more than 10,000 pascals, while Ganymede and Mars and the Moon have partial surface pressure of nitrogen of less than 10,000 pascals.
    All amino acids contain the chemical element nitrogen, so nitrogen availability is important to any life form based on DNA or RNA.
    For a planet with a high enough solar constant, water retention is important too. Steam from a meteorite strike can escape a planet that has too weak gravity, meaning that a meteorite can drive away more water from a planet than it delivers. Venus, with a ratio of planetery velocity about the Sun to escape velocity from the planetary surface of 3.38 to 1 seems to have gradually suffered a close to thorough version that fate, while Earth with a lower velocity ratio of 2.66 to 1 and with a lower solar constant has escaped that fate and retains about 70% ocean coverage.
    The stage was thus set that Earth would on a multi-billion year time frame have sufficient nitrogen availability for life and sufficient water availability for life. Meteorite strikes of course would turn some of the water into hydrogen and oxygen, and some of that hydrogen, failing to combine with nitrogen or with the resulting temporarily boosted oxygen in the atmosphere, floated out into space, leaving behind some of that extra oxygen. In the Archean Era though, there were plenty of dissolved iron ions in Earth's ocean to combine with that oxygen to form iron ores.

  • @garyfinchum3252
    @garyfinchum3252 Рік тому +1

    One thing I do not understand is that the general theory is that water was transported to earth inside zircons from space, but if the earth and the meteors are all made up of the same rocks, there must have been a tremendous amount of water here from the original rocks that made up the planet. It would seem more likely that the earth would have been enveloped in a gaseous shroud like Venus if that were the case. Could someone please explain this?