BBC NEWS | Science & Environment | Traces of planet collision found
BBC NEWS | Science & Environment | Traces of planet collision found: "A Nasa space telescope has found evidence of a high-speed collision between two burgeoning planets orbiting a young star.
Astronomers say the cosmic smash-up is similar to the one that formed our Moon some four billion years ago, when a Mars-sized object crashed into Earth.
In this case, two rocky bodies are thought to have slammed into one another in the last few thousand years."
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