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  1. Interstellar 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 …

  2. Interstellar 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, …

  3. Interstellar medium | Gas, Dust & Radiation | Britannica

    interstellar medium, region between the stars that contains vast, diffuse clouds of gases and minute solid particles. Such tenuous matter in the interstellar medium of the Milky Way …

  4. What is the Interstellar Medium? - University of New Hampshire

    Simply put, the interstellar medium is the material which fills the space between the stars. Many people imagine outer space to be a complete vacuum, devoid of any material.

  5. 20.1: The Interstellar Medium - Physics LibreTexts

    Astronomers refer to all the material between stars as interstellar matter; the entire collection of interstellar matter is called the interstellar medium (ISM). Some interstellar material is …

  6. What is interstellar space and where does it begin? | Space

    Jan 17, 2023 · Almost all the medium in interstellar space — about 99% — is composed of gas, with just 1% being in the form of dust and ice particles.

  7. 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). …

  8. Interstellar Medium - Definition & Detailed Explanation

    Apr 29, 2024 · The interstellar medium (ISM) is the vast expanse of space between stars and galaxies that is filled with gas, dust, and cosmic rays. It is a crucial component of the universe, …

  9. The insterellar medium, or ISM, is the nearly-empty space inside our Galaxy in which all the objects we’ve studied thus far are embedded (note that there is also an intergalactic medium …

  10. The Interstellar Medium - WorldAtlas

    Jul 18, 2022 · Interstellar space is saturated with gas and dust called the interstellar medium. This medium consists almost entirely of hydrogen and helium, along with trace amounts of heavier …

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