Earth's Oceans Formed Early When Our Planet Collected Meteorites

October 31, 2014 1:57 PM

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Earth's Oceans Formed Early When Our Planet Collected Meteorites

Earth is known for its vast bodies of water. In fact, our planet's oceans are what are largely responsible for sustaining life. Yet how did this water first form? Scientists have now found evidence that our Earth's oceans were created not when asteroids slammed into the planet, but far earlier.

Previously, scientists believed that planets originally formed dry, due to the high-energy impact processes of planet formation. Water then came later from sources such as comets or "wet" asteroids, which are largely composed of ices and gases. These objects fell to the planet and then released thei...

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