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Battered Earth

A new study published by NASA researchers seems to confirm that 4-4.5 billion years ago almost the entire planet was showered in an intense bombardment of giant asteroids.

This period would’ve effected the whole planet, essentially melting the surface into molten rock multiple times over, boiling any water oceans into a steam-atmosphere and dramatically altering the geological landscape.

(Image credit: Simone Marchi/SwRI)