deep space
Refers to the vast regions of outer space beyond Earth's immediate vicinity, often used in astronomy and space exploration contexts.
深宇宙探査には高度な技術が必要だ。
Deep space exploration requires advanced technology.
深宇宙からの信号を観測する。
Observe signals from deep space.
Compound of 深 (しん, 'deep') and 宇宙 (うちゅう, 'space'). The term is a direct translation of the English 'deep space' and is used in scientific and technical contexts.