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  1. en.wikipedia.org › wiki › Interstellar_mediumInterstellar medium - Wikipedia

    The 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.

  2. www.cfa.harvard.edu › research › topicInterstellar Medium and Molecular Clouds | Center for ...

    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.

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  4. cesar.esa.int › upload › 201705CESAR BOOKLET The Interstellar Medium: What’s between the ...

    The Interstellar Medium Interstellar gas and dust The Interstellar Medium (ISM) is the material filling the space between the stars. inly of gas It consists ma (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 ...

  5. phys.libretexts.org › Bookshelves › Astronomy20.1: The Interstellar Medium - Physics LibreTexts

    Apr 11, 2022 · The remaining 1% of the interstellar material is solid—frozen particles consisting of many atoms and molecules that are called interstellar grains or interstellar dust (Figure \(\PageIndex{1}\)). A typical dust grain consists of a core of rocklike material (silicates) or graphite surrounded by a mantle of ices; water, methane, and ammonia are probably the most abundant ices.

  6. www.allthescience.org › what-is-the-interstellarWhat is the Interstellar Medium? (with pictures) - AllTheScience

    May 21, 2024 · The diffuse particles of the interstellar medium move almost a million miles per hour around the galactic center. Depending on how close the particles are to the galactic center, they take somewhere between a few million years and a couple hundred million years to make a full rotation around the galaxy.

  7. www.worldatlas.com › space › the-interstellar-mediumThe Interstellar Medium - WorldAtlas

    Jul 18, 2022 · The Interstellar medium is composed of the atoms and molecules from countless stars across the galaxy. Stars are born within the densest areas of the interstellar medium in regions called nebulae. Every time a star forms, the amount of material in the interstellar medium decreases by a small amount. However, the interstellar medium never ceases ...

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  9. pressbooks.bccampus.ca › astronomy1105 › chapter20.1 The Interstellar Medium – Douglas College Astronomy 1105

    The remaining 1% of the interstellar material is solid—frozen particles consisting of many atoms and molecules that are called interstellar grains or interstellar dust as shown in Figure 1. A typical dust grain consists of a core of rocklike material (silicates) or graphite surrounded by a mantle of ices; water, methane, and ammonia are probably the most abundant ices.