Archean
When Life Became Possible
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EarthDoc
A journey of Earth's 4.6 billion year history
EarthDoc is a long-term project documenting the history of Earth. Through film, blog, and podcast, it seeks to tell the story of our planet's evolution over 4.6 billion years from a rigorous scientific perspective.
Archean
By 4 Billion Years Ago, Earth Had Finally Stopped Being Repeatedly "Reset"
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Hadean
Energy Stays Behind: Two Engines and the Atmospheric Greenhouse of the Hadean
Energy does not automatically stay on Earth — it has to be retained. The Sun shines continuously and the Earth's... Read more →
More Blogs
Hadean
Earth's First Water Cycle: From the Hadean Ocean to the Archaean Continents
In the Hadean, a world with no continents and no rivers, how did water move under a sun 30% dimmer than today... Read more →
Hadean
The Birth of Land: How Earth's First Crust Emerged from Fire
Before the Moon existed, Earth had no stable surface. The Theia impact shattered everything. Then, over millions of... Read more →
Hadean
Why Volcanoes Exist: How the Hadean Inferno Shaped Our Planet
In the Hadean eon, the entire surface of the Earth was a volcano. Volcanoes are not random disasters; they are the... Read more →
Hadean
How Earth's Oceans Formed: The Birth of the Oceans in the Hadean Eon
Over 70% of Earth's surface is covered by oceans, but this vast expanse of blue was not always there. During the Hadean... Read more →
Hadean
How Earth's Atmosphere Formed: Origins of the Hadean Atmosphere
Earth's atmosphere was not always as it is today. During the Hadean eon, it was torn apart, vaporised, rebuilt by... Read more →
Hadean
The Formation of the Moon
How the Moon formed from a giant impact early in Earth's history, and what it means for our planet today. Read more →
Hadean
How Earth Formed: From Cosmic Dust to a Molten Planet (Hadean Earth Explained)
A detailed explanation of early Earth formation: from dust accretion to a molten, differentiated planet during the... Read more →
solarSystem
How the Solar System Formed: From a Cold Cloud to a Star
The solar system was born 4.6 billion years ago. Its formation was a complex and lengthy process, involving the end of a... Read more →
Archean
Why Early Earth Did Not Freeze
A short note on greenhouse balance in the Archean. Read more →