KentuckyFC writes: "On 28 July 2006, Russian astronomers recorded the spectrum of a faint meteor as it burned up in the Earth's atmosphere (abstract on the physics arXiv). It soon became clear that this was no ordinary meteor. It hit the atmosphere at 300 kilometres per second, an order of magnitude faster than other meteors and faster than the Earth's velocity relative to anything else in the Milky Way. For this and other reasons, the astronomers conclude that the meteor must have come from beyond our galaxy."
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