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  • Earth is 4.5 billion years oldimpossible for your brain to truly grasp, so here is an experiment:

  • every second around 1.5 million years will passyou're on a musical train ride

  • looking out the window, passing all of Earth's History in an hour.

  • Watch the eons pass and experience how long a billion years really is.

  • You can have this in the background, study with it or just enjoy the ride.

  • From time to time, I'll say a few words.

  • 4.5 billion years ago, right after it was born, Earth was a hell of lava

  • Pretty early in its history, Earth collides with a Mars sized object called Theia,

  • which forms the moon that you now see in the sky.

  • Right now it looks huge in the night sky and will slowly shrink over hundreds of millions

  • of years as it orbits further away.

  • 4.5 Billion Years Ago we are in the first eon of our planet, the Hadean, named after the greek god of the underworld.

  • At this point the Atmosphere is mostly CO2 and the floor is lava.

  • This area of earth's history is mostly invisible to us because almost none of it is left.

  • 90 million years have passed.

  • We are still in the lava hell phase.

  • Settle in, this will take a while.

  • Although you wouldn't think it, we found minerals called zircons that indicate

  • there may have been some water around at this time.

  • During this period of the young solar system, Earth and the inner solar system are smashed

  • by a constant heavy asteroid bombardment, for several hundred million years.

  • At this point in time, our Sun is 30% less bright than it is today but there are so many

  • greenhouse gases that it's still much hot and comfy.

  • Around this time we think life begins to enter the stage.

  • Only a few hundred million years after the beginning of everything the first cells begin

  • spreading over our still very deadly planet.

  • Earth continues to cool and it probably rains for millions of years

  • as our oceans begin to form, covering the still young planet with water.

  • These hydrothermal vents we're looking at, and where hot minerals emerge, may have been

  • the place where life first developed, but we dont know.

  • So much time has passed and we are entering the Paleoarchean.

  • Most of Earth is still underwater while the first supercontinents are in the making

  • in the depths below.

  • Its days are shorter since the young Earth spins faster.

  • Good job if you are still watching.

  • You witnessed a billion years so far.

  • From this time in history we still have Stromatolites, sedimentary rocks built by microorganisms.

  • Among our first real evidence of life on Earth.

  • Also life is starting to eat the sunphotosynthesis might have started as early as around here.

  • 3.2 Billion Years Ago in the Mesoarchean the era of continents begins.

  • Tectonic plates begin to crush into each other, pulling and pushing some deep into the earth

  • where they dissolve.

  • The basis for our continents today.

  • The oceans are as hot as a hottub, over 40°C and microbes are expanding everywhere.

  • We don't have plants yet to consume greenhouse gases, so it is really, really hot.

  • You would basically die immediately in this atmosphere.

  • Also there is no oxygen in the atmosphere yet.

  • 2.8 Billion Years Ago the Neoarchean begins.

  • Earth is still a terribly hostile place but because we finally have proper plate tectonics,

  • more chemicals are mixed in from inside the earth and life can use them to make new things!

  • Some time around here Prokaryotes like bacteria begin colonizing the planet.

  • Life diversifies more and more.

  • But still, after so much time, we only have single cells.

  • 2.5 Billion Years Ago in the Siderian, a massive event is about to begin

  • that will change the planet forever: The Great Oxidation Event.

  • Oxygen, burped out by cyanobacteria reaches the atmosphere in large quantities,

  • paving the way for more complex life.

  • All the new oxygen in the air reacts with methane and forms CO2 and Water,

  • which rapidly cools the planet down.

  • Probably for the first time ever, the planet freezes over and a period of multiple

  • ice ages begins lasting millions of years.

  • 2.3 Billion Years Ago the Rhyacian begins.

  • Lots of volcanos heat up earth and earth unfreezes slowly again.

  • Melting ice flushes toxic elements into the oceans but life quietly puts up resistance

  • and keeps evolving.

  • Some time 2.05 Billion Years Ago in the Orosirian a large asteroid hits earth and creates the

  • largest verified impact structure on Earth.

  • All over Earth great mountain ranges are crushed into existence by early continents

  • with wild names like Ur, Nena or Atlantica.

  • 1.8 Billion Years Ago in the Statherian the supercontinent Columbia has formed.

  • And a natural, self sustaining nuclear reactor awakes,

  • just from scattered uranium deposits in the ground.

  • 1.6 billion years ago, around the edge of Calimmian, + or - a few hundred million years or so,

  • the first Eukaryotic cells, cells with a nucleus, merge from two other cells.

  • One of the most important moments in the history of life.

  • But yes, kind of looks not that impressive.

  • Still, life is only cells.

  • Earth's crust thickens and heavy continents form, the oceans become shallower.

  • Also the first fungi-like organisms extent their tubular arms and do fungi things.

  • Some time in the Ectasian 1.4 Billion Years Ago, Earths inner core is forming.

  • Weird, right? Feels like it should be older.

  • But around here it begins to solidify into a iron crystal surrounded by hot liquid metal.

  • It will only grow from now on.

  • 1.2 Billion Years Ago in the Stenian not that much is going on.

  • Except, the algae Bangiomorpha pubescens might have invented sex.

  • A big reproductive improvement for many different reasons.

  • 1 Billion Years Ago the Tonian begins, another age where Earth is rocks and puddles and oceans.

  • Life is still invisible to the naked eye.

  • It does feel different to witness it like that, right?

  • Not everybody is having a great time here.

  • We have evidence of the first unicellular predators emerging around that time.

  • The dominance of bacteria ends and big boy eukaryotes plant their flags in the oceans.

  • An arms race between microbes begins that again creates huge diversity.

  • Some even invent tiny armour.

  • 720 Million Years Ago in the Cryogenian Earth freezes over again.

  • Sure why not.

  • How did life survive?

  • We are not sure.

  • 635 Million Years Ago the supercontinent Gondwana forms.

  • A lot of it is still left today!

  • Wow! What's happening?

  • Suddenly life gets big!

  • In a hot second multicellular organisms become widespread!

  • It's all strange aliens still, but can you imagine that it took that long for this to happen?

  • 539 Million Years Ago the Cambrian explosion begins.

  • We see life bursting with variety.

  • Ancestors of almost all of today's major animal groups appear here while the plants start

  • to discover the land.

  • Life is finally exciting!

  • But of course a big mass extinction happens right after, killing most species in the ocean.

  • Plants spread over the planet and create the soil on the ground and change the atmosphere

  • by eating CO2.

  • Things escalate.

  • Flora and fauna adapt better and better to life on land.

  • We get trees and forrests, fish and the first vertebrate decide this land thing

  • is something they need to try out!

  • 359 Million Years Ago in the Carboniferous forests and lush marshlands are at their peak.

  • They will turn into the coal humanity burns today to keep ourselves warm.

  • Its all so fast now!

  • Life changes so quickly in geological timeframes!

  • Some 299 Million Years Ago in the Permian, Pangea, the last supercontinent has formed.

  • And after a few tens of million years, the largest mass extinction in history happens,

  • killing the majority of all species.

  • Thanks volcanoes.

  • 252 Million Years Ago the Triassic begins.

  • Oh hey, a dinosaur!

  • We are now truly in the age of reptiles.

  • Dinosaurs are everywhere!

  • The ancestors of the birds do bird things.

  • Life, uhh, finds a way!

  • Earth gets more and more familiar.

  • Such a paradise.

  • Life is thriving.

  • Nothing can go wrong... wait, what's that?

  • And an asteroid killed the dinosaurs and most species on Earth.

  • Such a bummer.

  • 66 Million Years Ago in the Paleogene

  • the continents look roughly the same as today and mammals take over.

  • It is our time now!

  • We are almost home.

  • Don't blink or you might miss all of human history!

  • And that was it.

  • Earth is ancient.

  • We are new.

  • So new.

  • This was a project born of passion.

  • We've worked on this video on and off since 2019 and as you can imagine, it took forever to make.

  • But we did we finished it in time for our tenth10 year anniversary.

  • If you want to support experimental videos like this one please like, share and subscribe

  • and press the bell.

  • You can also continue your journey through time with our new Timeline of Evolution poster.

  • Discover how long it took for the first cellular blobs to evolve into fishes, then into dinosaurs,

  • and finally into mammalsand encounter amazing creatures you've never heard of along the way.

  • This poster is part of our Education Edition.

  • A poster series that brings complex topics to life through extensive research and

  • elaborate illustrations.

  • It's perfect for teachers, students, and science lovers.

  • Get them from our shop and support what we do on this channel.

  • In any case, if you got this far, thank you so much!

  • Hope you felt something watching this.

Earth is 4.5 billion years oldimpossible for your brain to truly grasp, so here is an experiment:

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4.5 Billion Years in 1 Hour

  • 33 1
    Fang Lu に公開 2023 年 11 月 13 日
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