noun
deep space
Refers to the region of space beyond the Earth's immediate influence, often used in astronomy and science fiction.
その探査機はディープスペースへ向かった。
The probe headed into deep space.
Variant with an interpunct, sometimes used for clarity or in technical contexts.
A more general Japanese term for 'outer space', while ディープスペース specifically emphasizes the vast, remote regions far from Earth.
Borrowed from English 'deep space'.