(うちゅう)

うちゅう
noun
universe, cosmos, space
1. universe, cosmos
All of space and everything in it.
There are many stars in the universe.
宇宙(うちゅう)どこまで(ひろ)がっているだろう。
I wonder how far the universe extends.
Many scientists research the origins of the universe.
2. outer space
The area beyond Earth's atmosphere.
I want to become an astronaut.
Space development is progressing.
Next year, a Japanese astronaut is scheduled to go to the space station.

宇宙(うちゅう) covers two related meanings: the entire universe/cosmos (sense 1) and outer space beyond Earth's atmosphere (sense 2). In everyday conversation, sense 2 (outer space) is far more common.

COMMON COMPOUNDS:

  • 宇宙(うちゅう)飛行士(ひこうし): astronaut
  • 宇宙(うちゅう)(せん): spaceship
  • 宇宙(うちゅう)ステーション: space station
  • 宇宙(うちゅう)開発(かいはつ): space development
  • 宇宙(うちゅう)(じん): alien, space person
  • 宇宙(うちゅう)空間(くうかん): outer space (more technical)

WORD FORMATION:
() + (ちゅう) — both characters relate to vastness and space.

RELATED:

  • 銀河(ぎんが): galaxy
  • 太陽系(たいようけい): solar system
  • 天体(てんたい): celestial body