In space flights: a close approach to a celestial body for the purpose of observation; a spacecraft that makes such an approach.
| 单词 | θ207501 |
| 释义 | society > travel > air or space travel > space flight > [noun] > a space shot or flight > course or trajectory of spacecraft > close approach to a celestial body (2) fly-by1960 In space flights: a close approach to a celestial body for the purpose of observation; a spacecraft that makes such an approach. fly-through1976 Astronautics. A flight by a spacecraft through a particular area, esp. the tail of a comet, for the purpose of observation. Cf. fly-by, n. b, fly-past… |
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