Noun
The matter that exists in the space between star systems in a galaxy, including gas, dust, and cosmic rays.
- Related words
- intracluster mediumintergalactic mediuminterplanetary mediumextragalactic mediumextra-cluster mediuminterstellar spaceinterplanetary spaceintergalactic spaceextragalactic spacedeep spacenear spaceouter spaceEarthspacespace
Noun
interstellar space including streams of protons moving from the stars
- Broader terms