+**Interstellar Space** is the vast, low-density [Vacuum](/wiki/vacuum) existing between [Star Systems](/wiki/star_systems) within a galaxy. Though largely empty, it contains diffuse gas, microscopic dust, and cosmic rays.
+## See also
+- [Galaxy](/wiki/galaxy)
+- [Nebula](/wiki/nebula)
+- [Cosmic Rays](/wiki/cosmic_rays)