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Keyword: comaberenices

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  • Astronomy Picture of the Day -- NGC 4651: The Umbrella Galaxy

    07/03/2014 3:55:36 AM PDT · by SunkenCiv · 3 replies
    NASA ^ | July 02, 2014 | (see photo credit)
    Explanation: Image : : Explanation: Spiral galaxy NGC 4651 is a mere 62 million light-years distant, toward the well-groomed northern constellation Coma Berenices. About the size of our Milky Way, this island universe is seen to have a faint umbrella-shaped structure that seems to extend (left) some 100 thousand light-years beyond the bright galactic disk. The giant cosmic umbrella is now known to be composed of tidal star streams - extensive trails of stars gravitationally stripped from a smaller satellite galaxy. The small galaxy was eventually torn apart in repeated encounters as it swept back and forth on eccentric orbits...
  • Astronomy Picture of the Day -- One-Armed Spiral Galaxy NGC 4725

    05/30/2013 2:48:35 PM PDT · by SunkenCiv · 5 replies
    NASA ^ | May 30, 2013 | (see photo credit)
    Explanation: While most spiral galaxies, including our own Milky Way, have two or more spiral arms, NGC 4725 has only one. In this sharp color composite image, the solo spira mirabilis seems to wind from a prominent ring of bluish, newborn star clusters and red tinted star forming regions. The odd galaxy also sports obscuring dust lanes a yellowish central bar structure composed of an older population of stars. NGC 4725 is over 100 thousand light-years across and lies 41 million light-years away in the well-groomed constellation Coma Berenices. Computer simulations of the formation of single spiral arms suggest that...
  • Astronomy Picture of the Day -- M64: The Black Eye Galaxy

    04/04/2013 4:41:18 PM PDT · by SunkenCiv · 5 replies
    NASA ^ | April 04, 2013 | (see photo credit)
    Explanation: This beautiful, bright, spiral galaxy is Messier 64, often called the Black Eye Galaxy or the Sleeping Beauty Galaxy for its heavy-lidded appearance in telescopic views. M64 is about 17 million light-years distant in the otherwise well-groomed northern constellation Coma Berenices. In fact, the Red Eye Galaxy might also be an appropriate moniker in this colorful composition of narrow and wideband images. The enormous dust clouds obscuring the near-side of M64's central region are laced with the telltale reddish glow of hydrogen associated with star forming regions. But they are not this galaxy's only peculiar feature. Observations show that...
  • Astronomy Picture of the Day -- Blue Straggler Stars in Globular Cluster M53

    04/09/2012 7:34:49 PM PDT · by SunkenCiv · 9 replies
    NASA ^ | April 09, 2012 | (see photo credit)
    Explanation: If our Sun were part of M53, the night sky would glow like a jewel box of bright stars. M53, also known as NGC 5024, is one of about 250 globular clusters that survive in our Galaxy. Most of the stars in M53 are older and redder than our Sun, but some enigmatic stars appear to be bluer and younger. These young stars might contradict the hypothesis that all the stars in M53 formed at nearly the same time. These unusual stars are known as blue stragglers and are unusually common in M53. After much debate, blue stragglers are...
  • Astronomy Picture of the Day 5-06-02

    05/05/2002 10:11:57 PM PDT · by petuniasevan · 15 replies · 370+ views
    NASA ^ | 5-06-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 May 6 NGC 4676: When Mice Collide Credit: ACS Science & Engineering Team, NASA Explanation: These two galaxies are pulling each other apart. Known as "The Mice" because they have such long tails, each spiral galaxy has likely already passed through the other and will probably collide again and again until they coalesce. The long tails are created by the relative difference between gravitational pulls on the...