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    Picture of the Day: M82 Galaxy

    Astronomy Picture of the Day
    NASA Release | 23 July 2019


    M82: Galaxy with a Supergalactic Wind
    Image Credit: NASA, ESA, Hubble; Processing & Copyright: Daniel Nobre
    Why is the Cigar Galaxy billowing red smoke? M82, as this starburst galaxy is also known, was stirred up by a recent pass near large spiral galaxy M81. This doesn't fully explain the source of the red-glowing outwardly expanding gas and dust, however. Evidence indicates that this gas and dust is being driven out by the combined emerging particle winds of many stars, together creating a galactic superwind. The dust particles are thought to originate in M82's interstellar medium and are actually similar in size to particles in cigar smoke. The featured photographic mosaic highlights a specific color of red light strongly emitted by ionized hydrogen gas, showing detailed filaments of this gas and dust. The filaments extend for over 10,000 light years. The 12-million light-year distant Cigar Galaxy is the brightest galaxy in the sky in infrared light, and can be seen in visible light with a small telescope towards the constellation of the Great Bear (Ursa Major).
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    Billowing, energized hydrogen at its finest! - ilan
    Last edited by ilan; 07-23-2019 at 04:40 PM.
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