Asteroid ice may be 'living fossil' with clues to oceans' origins

The first-ever discovery of ice and organic molecules on an asteroid may hold clues to the origins of Earth's oceans and life 4 billion years ago. Researchers suggest that an asteroid like this one may have hit Earth and brought our planet its water. The discovery is unexpected because asteroids this close to the sun are expected to be too warm for ice to survive for long.

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