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    星座仙王座 & 天鹅座
    赤经20ʰ 34ᵐ 52.3ˢ
    Wikipedia
    https://en.wikipedia.org › wiki

    NGC 6946 - Wikipedia

    • NGC 6946, sometimes referred to as the Fireworks Galaxy, is a face-on intermediate spiral galaxy with a small bright nucleus, whose location in the sky straddles the boundary between the northern constellations of Cepheus and Cygnus. Its distance from Earth is about 25.2 million light-years or 7.72 megaparsecs, similar to the distance of M101 (NGC 5… 展开

    星系如何炸毁恒星
    星系如何炸毁恒星
    永不停止爆炸的银河系
    永不停止爆炸的银河系
    Supernovae

    Ten supernovae have been observed in NGC 6946 in the 20th and early 21st century: SN 1917A, SN 1939C, SN 1948B, SN 1968D, SN 1969P, SN 1980K, SN 2002hh, SN 2004et, SN 2008S, and SN 2017eaw. For thi… 展开

    Gallery

    • This image from the Kitt Peak National Observatory contextualizes the locations of supernovae 2004et and 2017eaw within the galaxy.
    • Images of 2017eaw in NGC 6946, taken between May and November 2017, as the supernov… 展开

    See also

    • IC 342 – similar galaxy heavily obscured by Milky Way stars and dust.
    • List of galaxies 展开

    External links

    • SEDS: Spiral Galaxy NGC 6946
    • Atlas of the Universe
    • N6946-BH1 Giant Star Becomes A Black Hole Right Before Our Eyes!… 展开

    CC-BY-SA 许可证中的维基百科文本
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  1. 百度百科
    https://baike.baidu.com › item

    NGC 6946 - 百度百科

  2. NGC 6946的图片

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    chamberlainobservatory.com
    NGC 6946 The Fireworks Galaxy : Chamberlain Observatory
    nasa.gov
    NGC 6946: The 'Fireworks Galaxy' | NASA
    scitechdaily.com
    Hubble Captures Breathtaking View of the “Fireworks Galaxy”
    astrobin.com
    NGC 6946, The Fireworks Galaxy with SN 2017eaw (karambit27) - AstroBin
    wyomingstargazing.org
    NGC 6946 - Fireworks Galaxy - Wyoming Stargazing
    dritter.net
    NGC 6946 - Fireworks Galaxy - Dave's Astronomy
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  3. 维基百科
    https://zh.wikipedia.org › wiki

    NGC 6946 - 维基百科，自由的百科全书

  4. TheSkyLive
    https://theskyliv…

    NGC 6946 (Fireworks Galaxy) - Intermediate …

    NGC 6946 is a Intermediate Spiral Galaxy in the Cygnus constellation. NGC 6946 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from …

  5. NASA
    https://www.nasa.gov › image-article

    NGC 6946: The 'Fireworks Galaxy' - NASA

  7. 维基百科
    https://zh.wikipedia.org › zh-hans

    NGC 6946 - 维基百科，自由的百科全书 - zh.wikipedia.org

  8. nasa.gov
    https://apod.nasa.gov › apod

    APOD: 2011 January 1 - Fireworks Galaxy NGC 6946

    NGC 6946 is a nearby spiral galaxy with a high rate of star formation and supernovae. See a colorful cosmic portrait of this galaxy in the constellation Cepheus, featured by Astronomy Picture of the Day.

  9. NASA中文
    https://www.nasachina.cn › apod

    正向星系NGC 6946 | NASA中文

    2024年7月26日 · Explanation: From our vantage point in the Milky Way Galaxy, we see NGC 6946 face-on. The big, beautiful spiral galaxy is located just 20 million light-years away, behind a veil of foreground dust and stars in the high …

  10. Science Mission Directorate
    https://scien…

    Caldwell 12 - NASA Science

    2024年8月23日 · Caldwell 12, also known as NGC 6946, is a spiral galaxy with a high rate of supernovae and a bright core. See Hubble's stunning views of its infrared, visible and …

  11. Science Mission Directorate
    https://scien…

    Hubble Views a Dazzling ‘Fireworks Galaxy’

    2021年1月8日 · NGC 6946 is a face-on spiral galaxy with a high rate of star formation and 10 observed supernovae in the last century. See the stunning details of its stars, spiral arms, and …