a pale band of light seen in the sky at night that contains the solar system and billions of other stars
天の川, ミルキーウェイ
the sun and the group of planets orbiting around it, including the earth
太陽系, 惑星系
(physics) the universal force of attraction between any pair of objects with mass
重力, 重力の力
a scientist who studies or observes planets, stars, and other happenings in the universe
天文学者
a specific group of stars that form a pattern and have a name related to their shape
星座
the explosion that, according to most scientists, caused the existence of the universe
ビッグバン, ビッグバン理論
a place in the space with such high gravity that pulls in everything, even light
ブラックホール
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
a piece of rock coming from outer space that passes through the Earth's atmosphere, producing light
流星, 隕石
a piece of rock or metal from space that has hit the surface of the earth
隕石, 流星
an object sent into space to travel around the earth and send or receive information
衛星, 気象衛星
a jet engine with liquid or solid fuel that is propelled by a burning gas stream
ロケット
the act of counting numbers backwards to zero before the launch of a missile or spacecraft
カウントダウン, 逆数
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
未確認飛行物体, UFO(未確認飛行物体)
a US government agency responsible for space travel and the study of space
NASA、米国航空宇宙局。
the distance that a beam of light travels in a year, equal to 9.46 trillion kilometers
光年, 光の距離単位