太空警卫
太空警卫（Spaceguard）这个名词指的是大量的发现与研究近地天体的努力。小行星的发现需要望远镜大面积的搜索天空。无论属于哪一个组织，专注于发现近地天体的努力都被视为"太空警卫巡天"的一份子。
Spaceguard
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英语百科
Spaceguard 太空警卫
The term Spaceguard loosely refers to a number of efforts to discover and study near-Earth objects (NEO). Asteroids are discovered by telescopes which repeatedly survey large areas of sky. Efforts which concentrate on discovering NEOs are considered part of the "Spaceguard Survey," regardless of which organization they are affiliated with.
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