noun-modifying (irregular), noun which may take the genitive case particle 'no'
interstellar
Used attributively to describe things between stars, such as space, matter, or travel.
星間空間には薄いガスが広がっている。
Thin gas is spread throughout interstellar space.
星間旅行はまだ実現していない。
Interstellar travel has not yet been realized.