interstellar medium

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Related to Interstellar matter: Interstellar dust

interstellar medium

n.
Material, mostly hydrogen gas, other gases, and dust, occupying the space between the stars and providing the raw material for the formation of new stars.

interstellar medium

n
(Astronomy) the matter occurring between the stars of our Galaxy, largely in the spiral arms, and consisting mainly of huge clouds of ionized, neutral, or molecular hydrogen. Abbreviation: ISM
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Noun1.interstellar medium - interstellar space including streams of protons moving from the stars
interstellar space - the space between stars
References in periodicals archive ?
The X-ray emissions also indicate that the black holes are actively devouring interstellar matter around them.
Once completed, the antenna array is expected to lead to the discovery of planets beyond the solar system, reveal the process of planet and galaxy formation and advance research into interstellar matter, cosmology and other important questions of modern astrophysics.
But if a quasar is on its inexorable way to becoming a black hole--or "collapsar" as Campbell put it--all the interstellar matter and star stuff surrounding this gravitational collapse would be screaming in cosmic agony throughout the electromagnetic spectrum while being sucked into this ineffable vortex.
The new finding suggests that a good part of the key components in terrestrial prebiotic chemistry could be present in interstellar matter.
Since the 1980s, hundreds of bands found in the spectrum of the interstellar medium, known as diffuse spectroscopic bands, have been known to be associated with interstellar matter, but their origin has not been identified until now.
A recent study indicates that these jets are encountering dense clouds of interstellar matter and blowing a lumpy, bipolar bubble of hot gas.