Space
Cosmic collision created the Chelyabinsk meteor
The large chunk of rock that exploded over Russia last year was born during a collision between two large rocky asteroids about 290 million years ago
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The large chunk of rock that exploded over Russia last year was born during a collision between two large rocky asteroids about 290 million years ago
The Hubble Space Telescope has spotted a space rock as it breaks apart – the first one ever caught in the act. What's to blame?