Different Directions

Different Directions

Earth’s Water Likely Came from Very Early Asteroid Strikes

by Mike Wall, SPACE.com Senior Writer   |   October 25, 2013 11:56am ET

Earth got most of its water from asteroid impacts nearly 4.6 billion years ago, shortly after the solar system first took shape, a newstudy suggests.

An artist's illustration of a large asteroid headed for Earth. Credit: ESA

An artist’s illustration of a large asteroid headed for Earth.
Credit: ESA

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