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Astronomers Discover Rare Nine-Ring Galaxy, Challenging Galactic Collision Theories
A newly discovered galaxy is challenging what scientists thought they knew about galactic collisions. Located 567 million ...
NASA's Curiosity Mars rover discovers evidence of ripples from an ancient Red Planet lake (images)
Today, we know of Mars as a cold, dry desert, with patches of subterranean ice and ice caps at its poles. Billions of years ...