interstellar
🇺🇸
/ˌɪntərˈstelər/
🇬🇧
/ˌɪntəˈstelə(r)/
Existing or occurring in the space between the stars.
The interstellar medium is the matter and radiation that exists in the space between the star systems in a galaxy.
星际介质是存在于星系内恒星系统之间的空间中的物态和辐射。