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  • Thumbnail for Lenticular galaxy
    considered early-type galaxies that are passively evolving, at least in the local part of the Universe. Connecting the E galaxies with the S0 galaxies are the...
    28 KB (3,314 words) - 06:04, 9 September 2024
  • Thumbnail for Elliptical galaxy
    dominate their galaxy clusters. Originally, Edwin Hubble hypothesized that elliptical galaxies evolved into spiral galaxies, which was later discovered to...
    17 KB (1,907 words) - 05:42, 12 September 2024
  • Thumbnail for Galaxy morphological classification
    based on local galaxies. Elliptical galaxies are divided into three 'stages': compact ellipticals (cE), normal ellipticals (E) and late types (E+). Lenticulars...
    20 KB (1,692 words) - 01:57, 13 June 2024
  • Thumbnail for Seyfert galaxy
    Seyfert galaxies are one of the two largest groups of active galaxies, along with quasar host galaxies. They have quasar-like nuclei (very luminous sources...
    49 KB (5,702 words) - 02:45, 17 July 2024
  • Thumbnail for Whirlpool Galaxy
    the designation M51 is used to refer to the pair of galaxies, in which case the individual galaxies may be referred to as M51a (NGC 5194) and M51b (NGC...
    30 KB (3,034 words) - 20:51, 24 August 2024
  • Thumbnail for Galaxy color–magnitude diagram
    valley is actually composed of two different populations of galaxies: one of late-type galaxies, where star formation has been quenched due to their gas...
    5 KB (594 words) - 17:40, 19 February 2024
  • Thumbnail for Dwarf galaxy
    larger galaxies. Astronomers identify numerous types of dwarf galaxies, based on their shape and composition. One theory states that most galaxies, including...
    24 KB (2,396 words) - 15:55, 5 September 2024
  • "Association of supernovae with recent star formation regions in late type galaxies". Astronomical Journal. 103 (6): 1788–1803. Bibcode:1992AJ....103...
    48 KB (5,057 words) - 04:49, 19 July 2024
  • Thumbnail for Interacting galaxy
    Interacting galaxies (colliding galaxies) are galaxies whose gravitational fields result in a disturbance of one another. An example of a minor interaction...
    16 KB (1,380 words) - 22:17, 8 September 2024
  • Galaxy mergers can occur when two (or more) galaxies collide. They are the most violent type of galaxy interaction. The gravitational interactions between...
    24 KB (2,573 words) - 11:59, 14 September 2024
  • Thumbnail for Spiral galaxy
    Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, form part of the Hubble...
    30 KB (3,630 words) - 23:48, 8 August 2024
  • Thumbnail for UGC 4653
    UGC 4653 (category Interacting galaxies)
    trio of interacting galaxies located 763 million light-years away from the solar system in the Lynx constellation. The galaxies are being distorted through...
    6 KB (442 words) - 11:05, 9 September 2024
  • Thumbnail for List of most massive black holes
    exists only in a handful of galaxies; these include the Milky Way, the Local Group galaxies M31 and M32, and a few galaxies beyond the Local Group, e.g...
    76 KB (5,766 words) - 18:47, 9 September 2024
  • low-luminosity radio-loud quasars. The host galaxies of radio galaxies, whatever their emission-line type, are essentially always ellipticals. Unified...
    48 KB (6,006 words) - 02:08, 6 September 2024
  • Thumbnail for Anemic galaxy
    classify galaxies that are an intermediate form between the gas-rich, star-forming spiral galaxies and the gas-poor, inactive lenticular galaxies. Anemic...
    11 KB (1,278 words) - 19:25, 28 July 2024
  • galaxies or LIRGs are galaxies with luminosities, the measurement of brightness, above 1011 L☉. They are also referred to as submillimeter galaxies (SMGs)...
    21 KB (2,232 words) - 06:03, 22 August 2024
  • Thumbnail for Messier 74
    Messier 74 (redirect from Spiral Galaxy M74)
    ; Reid, M.J. (February 2015). "Characteristics of Spiral Arms in Late-type Galaxies". The Astrophysical Journal. 800 (1): 5387–5394. arXiv:1412.1012....
    17 KB (1,577 words) - 04:35, 18 August 2024
  • Thumbnail for Galaxy
    a spiral galaxy. It is estimated that there are between 200 billion (2×1011) to 2 trillion galaxies in the observable universe. Most galaxies are 1,000...
    158 KB (15,910 words) - 20:46, 30 August 2024
  • Thumbnail for Andromeda Galaxy
    event were later found. Like the Milky Way, the Andromeda Galaxy has smaller satellite galaxies, consisting of over 20 known dwarf galaxies. The Andromeda...
    110 KB (10,778 words) - 21:46, 11 September 2024
  • following is a list of notable galaxies. There are about 51 galaxies in the Local Group (see list of nearest galaxies for a complete list), on the order...
    117 KB (6,315 words) - 12:26, 1 September 2024
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