中新网国际新闻: 美航天局宣布开普勒太空望远镜“退休”

中新网国际新闻

美航天局宣布开普勒太空望远镜"退休" Oct 31st 2018, 11:59 　　新华社华盛顿10月30日电(记者周舟)美国航天局30日宣布，开普勒太空望远镜"退休"了，它在太空工作了9年多，发现了2662颗系外行星，其中许多行星有可能孕育生命。

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