• Thumbnail for Star formation
    Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming...
    48 KB (5,543 words) - 03:22, 13 October 2024
  • Thumbnail for Neutron star
    through fusion, they inexorably cool down after their formation. Consequently, a given neutron star reaches a surface temperature of one million K when...
    115 KB (13,830 words) - 21:58, 16 November 2024
  • Thumbnail for Star
    regions. Such feedback effects, from star formation, may ultimately disrupt the cloud and prevent further star formation. All stars spend the majority of...
    148 KB (16,434 words) - 01:14, 22 November 2024
  • Thumbnail for Galaxy formation and evolution
    clustered nature of star formation by treating star clusters as the fundamental unit of star formation. This approach permits the growth of star particles by...
    45 KB (5,574 words) - 17:14, 11 November 2024
  • Thumbnail for Binary star
    formation process. The observation of binaries consisting of stars not yet on the main sequence supports the theory that binaries develop during star...
    68 KB (8,192 words) - 19:48, 21 November 2024
  • Thumbnail for Starburst galaxy
    exceptionally high rate of star formation, as compared to the long-term average rate of star formation in the galaxy, or the star formation rate observed in most...
    19 KB (2,063 words) - 17:11, 7 August 2024
  • Thumbnail for Nebular hypothesis
    not well known. Thus the formation of planetary systems is thought to be a natural result of star formation. A Sun-like star usually takes approximately...
    75 KB (9,172 words) - 06:52, 3 November 2024
  • Thumbnail for Molecular cloud
    (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit absorption nebulae, the formation of molecules...
    33 KB (3,752 words) - 21:49, 30 October 2024
  • Thumbnail for Triangulum Galaxy
    "The Star Formation History of the Local Group". In F. Favata; A. Kaas; A. Wilson (eds.). Proceedings of the 33rd ESLAB symposium on star formation from...
    48 KB (5,095 words) - 04:39, 22 November 2024
  • Thumbnail for Elliptical galaxy
    clusters. Star formation activity in elliptical galaxies is typically minimal; they may, however, undergo brief periods of star formation when merging...
    17 KB (1,907 words) - 05:05, 17 November 2024
  • Thumbnail for Cosmology
    cosmological constant. Absolute time and space Big History Earth science Galaxy formation and evolution Illustris project Jainism and non-creationism Lambda-CDM...
    51 KB (3,294 words) - 03:57, 21 November 2024
  • Thumbnail for Galaxy
    heavy elements, eventually allowing the formation of planets. Hubble eXtreme Deep Field (XDF) Star formation rates in galaxies depend upon their local...
    159 KB (15,991 words) - 03:29, 11 November 2024
  • Thumbnail for Messier 65
    of authors. The galaxy is low in dust and gas, and there is little star formation in it, although there has been some relatively recently in the arms...
    6 KB (491 words) - 06:59, 30 December 2023
  • Thumbnail for Messier 100
    spots. Messier 100 is considered a starburst galaxy with the strongest star formation activity concentrated in its center, within a ring – actually two tightly...
    10 KB (1,088 words) - 21:23, 20 October 2024
  • Thumbnail for Whirlpool Galaxy
    period of enhanced star formation. The present efficiency of star formation, defined as the ratio of mass of new stars to the mass of star-forming gas, is...
    30 KB (3,035 words) - 05:54, 4 November 2024
  • Thumbnail for Timeline of the early universe
    parent star Kepler-452 7.98 billion years (5.82 Gya): Formation of Mira or Omicron ceti, binary star system. Formation of Alpha Centauri Star System,...
    36 KB (5,008 words) - 07:50, 6 October 2024
  • Thumbnail for Leo I (dwarf galaxy)
    major increase (accounting for 70% to 80% of its population) in its star formation rate between 6 Ga and 2 Ga (billion years ago). There is no significant...
    9 KB (961 words) - 18:30, 5 September 2024
  • Thumbnail for Star cluster
    leading to the disruption of a star cluster. Most young embedded clusters disperse shortly after the end of star formation. The open clusters found in the...
    23 KB (2,683 words) - 14:29, 28 October 2024
  • Thumbnail for Local Bubble
    for the formation of all young, nearby stars. These new stars are typically in molecular clouds like the Taurus molecular cloud and the open star cluster...
    20 KB (2,149 words) - 11:40, 26 July 2024
  • Thumbnail for Andromeda Galaxy
    sequence" (galaxies that lack star formation). Star formation activity in green valley galaxies is slowing as they run out of star-forming gas in the interstellar...
    110 KB (10,772 words) - 21:19, 22 November 2024
  • Thumbnail for Stellar population
    were later shown to be very important and were possibly related to star formation, observed kinematics, stellar age, and even galaxy evolution in both...
    35 KB (3,549 words) - 18:58, 9 November 2024
  • Thumbnail for Spiral galaxy
    Spiral galaxy (redirect from Halo star)
    center into the galactic disc. The spiral arms are sites of ongoing star formation and are brighter than the surrounding disc because of the young, hot...
    30 KB (3,630 words) - 16:14, 19 November 2024
  • Thumbnail for NGC 6872
    rates of star formation, with rates increasing along the spiral arms as distance from the core increases. The most active region of star formation, located...
    11 KB (1,021 words) - 13:25, 21 September 2024
  • Thumbnail for Messier 90
    process, which is referred to as ram-pressure stripping, the medium and star formation regions appear severely truncated compared to similar galaxies outside...
    11 KB (1,140 words) - 00:04, 13 March 2024
  • Thumbnail for Open cluster
    have been found only in spiral and irregular galaxies, in which active star formation is occurring. Young open clusters may be contained within the molecular...
    52 KB (6,312 words) - 03:50, 18 October 2024
  • Thumbnail for Nebula
    Nebula (redirect from Nebulous star)
    Nebulae are often star-forming regions, such as in the Pillars of Creation in the Eagle Nebula. In these regions, the formations of gas, dust, and other...
    21 KB (2,865 words) - 04:12, 6 November 2024
  • Thumbnail for Bok globule
    small dark nebulae containing dense cosmic dust and gas from which star formation may take place. Bok globules are found within H II regions, and typically...
    9 KB (847 words) - 18:25, 17 November 2024
  • Thumbnail for Milky Way
    Milky Way (section Formation)
    sequence" (galaxies that lack star formation). Star-formation activity in green valley galaxies is slowing as they run out of star-forming gas in the interstellar...
    217 KB (21,681 words) - 08:41, 19 November 2024
  • Thumbnail for Hall effect
    Although it is well known that magnetic fields play an important role in star formation, research models indicate that Hall diffusion critically influences...
    33 KB (3,789 words) - 07:41, 22 November 2024
  • Thumbnail for Operation Formation Star
    Operation Formation Star was the code name for the emergency re-deployment of U.S. Seventh Fleet warships to the Sea of Japan off the eastern coast of...
    122 KB (12,667 words) - 23:23, 7 October 2024