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a creature that is believed to exist in other worlds or planets
エイリアン, 宇宙人
the universe beyond the atmosphere of the earth
宇宙 (うちゅう), スペース
the space outside the earth's atmosphere
宇宙, Outer space (オウター・スペース)
all that exists in the physical world, such as space, planets, galaxies, etc.
宇宙 (うちゅう), 世宇 (せいう)
any of the rocky bodies orbiting the sun, ranging greatly in diameter, also found in large numbers between Jupiter and Mars
小惑星（しょうわくせい）, アステロイド
a place in the space with such high gravity that pulls in everything, even light
ブラックホール, 重力井戸
a large number of star systems bound together by gravitational force
銀河（ぎんが）, 星系群（せいけいぐん）
the sun and the group of planets orbiting around it, including the earth
太陽系, ソーラーシステム
the 1st and smallest planet in the solar system which is the closest to the sun
水星（すいせい）, マーキュリー
the 2nd planet of the solar system located between Mercury and earth
金星（きんせい）, ヴィーナス
the 4th planet of the solar system located between earth and Jupiter
火星 (かせい), Mars (マーズ)
the 5th and the largest planet of the solar system located between Mars and Saturn
ジュピター, 木星
the 6th planet of the solar system located between Jupiter and Uranus, which has rings around it
サターン, 土星
the 7th planet of the solar system with a blue-green color located between Saturn and Neptune
天王星 (てんおうせい), ウラヌス
the 8th planet of the solar system with a ring of icy particles around it
ネプチューン, 海王星
a branch of science that studies space, planets, etc.
天文学, 宇宙科学
a scientist who studies or observes planets, stars, and other happenings in the universe
天文学者, 天体観測者
the act of an aircraft or spacecraft arriving on the ground or a solid surface
着陸（ちゃくりく）, 降下（こうか）
situated on the outside of something else
外側の, 外部の
the path an object in the space follows to move around a planet, star, etc.
軌道 (きどう), オービット
to move around a star, planet, or a large object in space
軌道を回る, 周囲を回る
a spacecraft that moves up by the force of the gases produced when the fuel burns
ロケット, ミサイル
an object sent into space to travel around the earth and send or receive information
衛星 (えいせい), サテライト
to send an object, such as a satellite, missile, etc., into space
打ち上げる (うちあげる), 発射する (はっしゃする)
the process by which an aircraft leaves the ground and starts to fly
離陸 (りりく), テイクオフ
a vehicle designed to travel in space
宇宙船, 宇宙探査機
someone who travels into space, such as an astronaut
宇宙飛行士, スペースマン
a kind of spacecraft used by astronauts to explore in space
宇宙船, スペースシップ
a large structure used as a long-term base for people to stay in space and conduct research
宇宙ステーション, スペースステーション
clothing used by astronauts while traveling in space
宇宙服, スペーススーツ
a period during which an astronaut moves outside an spacecraft in space, typically to perform repairs or experiments
宇宙遊泳（うちゅうゆうえい）, スペースウォーク
a piece of equipment by which the far objects, particularly those in space, are made clearly visible
望遠鏡 (ぼうえんきょう), スコープ
