What does 宇宙 mean?
宇宙 is a Japanese noun meaning “universe, cosmos, space” in English. It is written as 宇宙 in kanji, うちゅう in hiragana, and uchuu in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
宇宙には限りはない。
There is no limit to the universe.