Interstellar Medium
- Interplanetary space - Interplanetary medium - interplanetary dust
- Interstellar space - Interstellar medium - interstellar dust
- Intergalactic space - Intergalactic medium - Intergalactic dust
Read more about this topic: Galactic Astronomy
Famous quotes containing the word medium:
“Whenever, therefore, people are deceived and form opinions wide of the truth, it is clear that the error has slid into their minds through the medium of certain resemblances to that truth.”
—Socrates (469–399 B.C.)