| 词汇 | near-earth-object |
| 释义 | near-earth object noun[ C ] uk /ˌnɪərˌɜːθ ˈɒb.dʒɪkt/ us /ˌnɪrˌɝːθ ˈɑːb.dʒɪkt/(abbreviationNEO) an object in space, for example an asteroid, comet, or meteoroid that sometimes passes close to the earth: 近地天体 The task of finding and tracking large near-earth objects more than one kilometre across has been assigned to the Spaceguard Survey.发现和跟踪直径超过一千米的大型近地天体的任务已交给“空间卫士勘测计划”来做。 Astronomy albedo Andromeda Aquarius Aries asteroid galactic galaxy Gemini geostationary geosynchronous observatory orbit orbital Orion penumbra substellar sunspot supergiant supermassive supermoon |
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