Earth is about to have a close encounter with a house-sized asteroid on Sunday (Sept. 7), when a space rock discovered just days ago will zoom by our planet at a range closer than some satellites. …
A previously unknown "asteroid" spotted by a NASA telescope is actually a comet, according to recent observations. NASA's NEOWISE space telescope, which started its newest near-Ea…
What Happens When a Comet Loses Its Tail? It's difficult to predict exactly what will happen when the potentially great Comet ISON makes a sharp turn around the sun on Thanksgiving Day. But…
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