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Asteroids and satellites, oh, my! Two reports warn us to cast a wary eye above as space debris -- natural and man made -- drops from the sky. But don’t over-fret: Odds of getting hit are very small, though experts warn that the right-size asteroid would cause major damage.

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What happens when planetary bodies go rogue? Well, that's one universal mystery that scientists didn't actually know of until a team of Japanese researchers claimed to have found 10 such free-range roamers -- and what's more, they might be shockingly common in space.

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Our solar system isn't the good old circle or oval you might have thought it is. According to research reported on this week by National Geographic News, it is bullet-shaped.

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