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Early Earth Bombarded By Comets

Comets carrying chemicals necessary for life may have come to Earth billions of years ago.
Topic: Space + FlightSpace & FlightNova

Key ingredients for life may have been delivered throughout the solar system by comets and asteroids billions of years ago. The gravitational interactions of Jupiter and Saturn could have destabilized the early solar system, leading to a period in which comets and asteroids collided with objects throughout the solar system (including the early Earth). Impact craters visible on moons and planets may be evidence of this period.

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