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White Dwarf Binary Sets Speed Record[zz]
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White Dwarf Binary Sets Speed Record[zz]# Astronomy - 天文
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A pair of white dwarfs spin around each other faster than any other known
stellar couple.
by Vanessa Thomas
Imagine that our moon was the same size as Earth and only about one-fifth its
current distance from us. Now imagine that instead of about a month, it took
just over five minutes to whip itself through the sky from one new moon to
the next — over and over and over again, day after day.
Dizzy yet?
Fortunately, a nearby, enlarged moon does not speed through our skies at such
a wild pace. But
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