Tag: astronomers

Did asteroids bring water and life to Earth?

September 3, 2010 |  by Michael Anft

Space scientists have put several men on the moon, robotically explored the farthest reaches of the solar system, and calculated the age and composition of the universe. But they’ve had a hard time nailing down two of the most basic questions about life on Earth: How did the surface of the planet become mostly water? […]

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