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Rare View of Ancient Galaxy Crash Revealed

Astronomers caught a glimpse of two star-forming galaxies as they collided 11 billion light-years away. The smashup could eventually produce one giant elliptical galaxy, researchers say

May 22, 2013 — Mike Wall and

Mystery of Moon's Magnetic Field Deepens

The moon generated a surprisingly intense magnetic field until at least 3.56 billion years ago, 160 years longer than previously thought, a new study reports

May 20, 2013 — Charles Q. Choi and
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