• Thumbnail for Helium flash
    A helium flash is a very brief thermal runaway nuclear fusion of large quantities of helium into carbon through the triple-alpha process in the core of...
    13 KB (1,615 words) - 13:11, 23 August 2024
  • Thumbnail for Thermal runaway
    less dramatic event in the normal evolution of solar-mass stars, the "helium flash". Chemical reactions involving thermal runaway are also called thermal...
    35 KB (4,168 words) - 16:46, 10 August 2024
  • Thumbnail for Stellar nucleosynthesis
    sufficient helium in its core to ignite it. In stars around the mass of the Sun, this begins at the tip of the red giant branch with a helium flash from a...
    37 KB (4,238 words) - 05:59, 6 September 2024
  • Thumbnail for Red-giant branch
    called the first giant branch, is the portion of the giant branch before helium ignition occurs in the course of stellar evolution. It is a stage that follows...
    32 KB (3,933 words) - 10:37, 28 August 2024
  • Thumbnail for Red giant
    so-called helium flash. In more-massive stars, the collapsing core will reach 108 K before it is dense enough to be degenerate, so helium fusion will...
    26 KB (3,415 words) - 21:45, 15 September 2024
  • Thumbnail for Stellar evolution
    pressure, helium fusion will ignite on a timescale of days in a helium flash. In the nondegenerate cores of more massive stars, the ignition of helium fusion...
    50 KB (6,476 words) - 21:57, 11 September 2024
  • rocks Helium fusion, a type of nuclear fusion in stars Helium flash, the sudden beginning of helium fusion in certain kinds of stars Isotopes of helium Helium-3...
    2 KB (256 words) - 12:58, 23 July 2022
  • Thumbnail for Triple-alpha process
    process, known as the helium flash, lasts a matter of seconds but burns 60–80% of the helium in the core. During the core flash, the star's energy production...
    21 KB (2,683 words) - 18:58, 21 August 2024
  • Thumbnail for Asymptotic giant branch
    up and eventually the helium shell ignites explosively, a process known as a helium shell flash. The power of the shell flash peaks at thousands of times...
    26 KB (3,178 words) - 20:50, 19 September 2024
  • Thumbnail for G-type main-sequence star
    sequence. After this, the star's degenerate helium core abruptly ignites in a helium flash fusing helium, and the star passes on to the horizontal branch...
    12 KB (1,178 words) - 08:02, 17 September 2024