near-earth object
noun[C]
uk/ˌnɪərˌɜːθ ˈɒb.dʒɪkt/us/ˌnɪrˌɝːθ ˈɑːb.dʒɪkt/(abbreviationNEO)anobjectinspace, forexampleanasteroid,comet, ormeteoroidthat sometimespassescloseto theearth:
近地天体Thetaskoffindingandtrackinglargenear-earthobjectsmore than onekilometreacrosshas beenassignedto 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
- full moon
- galactic
- galaxy
- Gemini
- geostationary orbit
- orbit
- orbital
- penumbra
- phase
- Pisces
- substellar
- sunspot
- supergiant
- supermassive
- supermoon