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外媒:一颗恒星正往太阳系前进 恐推动上百万颗小行星撞向地球!(组图)
Thursday, January 12, 2017 13:54
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科学家一直都知道一颗名为Gliese710的恒星正往太阳系前进中,但他们现在正确的估算出实际的到达时间了。 这颗恒星正以每小时51,499公里的速度穿越太空,它离我们的距离是64光年远(1光年等于9,461,000,000,000公里)。 Gliese710大概是我们太阳的一半大小,而估计在135万年后抵达地球,根据11月天文…

2017-01-12 13:52:08

原始网页: http://www.aboluowang.com/2017/0113/865948.html

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