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The sun may have created a cloud of water gas by vaporising asteroids
ESA/Hubble Copyright: NASA, ESA, M.A. Garlick (space-art.co.uk), University of Warwick, and University of Cambridge.
A vast cloud of vapour expelled from boiled asteroids may have lingered in the solar system for millions of years before raining down on Earth, according to a new idea for how our planet got its water.
The origin of Earth’s water has long puzzled scientists. It is difficult to argue that our planet has always had the water we see today, because the young sun would have been so hot…
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