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a creature that is believed to exist in other worlds or planets
エイリアン, 宇宙人
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
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 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
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）
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
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)
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
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
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