What does 夜空 mean?
夜空 is a Japanese noun meaning “night sky” in English. It is written as 夜空 in kanji, よぞら in hiragana, and yozora in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
何かとても明るいものが夜空を横切って飛ぶのが見えた。
I saw something very bright fly across the night sky.