Distributed gas, interstellar dust and other matter that is found throughout interstellar space.
- Dust, Interstellar - Text by M. Alan Kazlev
Particles of carbon, iron, and silicates coated with ice, making up about 1% of the mass of the interstellar medium. Each grain is about a micron in diameter. They are often associated with nebula and young stars. The average distance between dust grains is about 150 meters. A nuisance to starfaring vessels, because the impact at relativistic velocity tends to seriously erode the protective shielding, interstellar dust is highly prized by cloudharvesters and other hider phyles
- Interstellar Atom - Text by M. Alan Kazlev
Atom of gas in interstellar space. Mostly hydrogen or helium, although heavier elements are occasionally encountered.
- Interstellar Grain - Text by M. Alan Kazlev
Microscopic solid grain in interstellar space; the component parts of interstellar dust.
- Interstellar Molecule - Text by M. Alan Kazlev
Molecule of gas in interstellar space.
- Interstellar Obscuration - Text by M. Alan Kazlev
Absorption of starlight by interstellar dust, causing distant objects to appear fainter.