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the moon when only a small portion of its bright side is visible from the earth
新月, 朔月
the explosion that, according to most scientists, caused the existence of the universe
大爆炸, 宇宙大爆炸
a pale band of light seen in the sky at night that contains the solar system and billions of other stars
银河, 银河系
a specific group of stars that form a pattern and have a name related to their shape
星座, 星群
(astronomy) the celestial zone in the sky where the sun, moon, and planets appear to move, traditionally divided into twelve equal segments, each associated with a distinct name and symbol
黄道, 十二宫
an object in space that is a mass of ice and dust and when it nears the sun it starts illuminating in the shape of a tail
彗星, 慧星
a piece of rock coming from outer space that passes through the Earth's atmosphere, producing light
流星, 陨石
a glowing cloud of gas and dust in outer space, often the result of a star explosion or formation
星云, 星云气
an exploding star that as a result is emitting a very large amount of light, more than the sun
超新星, 超级nova
a US government agency responsible for space travel and the study of space
美国国家航空航天局, 美国国家航空和宇宙总署
a vehicle designed and used to go to space and return multiple times
航天穿梭机, 宇宙飞船
a mysterious object that some people claim to have seen flying around in the sky and assume that it is a spaceship from another world
不明飞行物体, 不明飞行者
having or seeming to have no or little weight, caused by the absence of gravity
无重的, 失重的
