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Bookmark or Share- The Interstellar Medium - European Space AgencyWhat is the Interstellar Medium? The Interstellar Medium (ISM) is the material filling the space between the stars. It consists mainly of gas (99%) and dust (1%), mostly found in the form of clouds, or nebulae (plural of nebula). About 75% of the interstellar gas is in the form of hydrogen, and nearly all the remaining 25% as helium.
- What is interstellar space and where does it begin? | SpaceAlmost all the medium in interstellar space — about 99% — is composed of gas, with just 1% being in the form of dust and ice particles.
- Interstellar medium - Latest research and news | NatureInterstellar medium is the space between the stars. The interstellar medium is composed of gas (predominantly hydrogen and helium) and dust. Such interstellar matter makes up...
- Interstellar Medium and Molecular Clouds | Center for Astrophysics ...Interstellar space — the region between stars inside a galaxy — is home to clouds of gas and dust. This interstellar medium contains primordial leftovers from the formation of the galaxy, detritus from stars, and the raw ingredients for future stars and planets.
- Interstellar medium - WikipediaThe interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.
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