noun
A somewhat literary or poetic term for the vast sky or heavens, often with a grand or spiritual nuance. In everyday speech, 空 (そら) is more common.
夜空には無数の星が輝き、天空はまるで宝石箱のようだった。
Countless stars shone in the night sky, and the heavens were like a jewel box.
彼は天
He longed to be a bird flying freely through the sky.