brucesterling:
zerostatereflex:
Four Billion BCE: Battered…
Four Billion BCE: Battered Earth
"No place on Earth was safe. Four billion years ago, during the Hadean eon, our Solar System was a dangerous shooting gallery of large and dangerous rocks and ice chunks."
(The gif below shows impacts over time: “Spatial distribution and sizes of craters formed on the early Earth. Each circle indicates the final estimated crater size; color coding indicates time of impact. Credit: Simone Marchi/SwRI.”)
*Ouch
That’s a lot of rocks and ice
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