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  2. Near-Earth supernova - Wikipedia

    en.wikipedia.org/wiki/Near-Earth_supernova

    The Crab Nebula is a pulsar wind nebula associated with the 1054 supernova.It is located about 6,500 light-years from the Earth. [1]A near-Earth supernova is an explosion resulting from the death of a star that occurs close enough to the Earth (roughly less than 10 to 300 parsecs [30 to 1000 light-years] away [2]) to have noticeable effects on Earth's biosphere.

  3. SN 1987A - Wikipedia

    en.wikipedia.org/wiki/SN_1987A

    SN 1987A was a type II supernova in the Large Magellanic Cloud, a dwarf satellite galaxy of the Milky Way. It occurred approximately 51.4 kiloparsecs (168,000 light-years) from Earth and was the closest observed supernova since Kepler's Supernova in 1604. Light and neutrinos from the explosion reached Earth on February 23, 1987 and was ...

  4. List of supernovae - Wikipedia

    en.wikipedia.org/wiki/List_of_supernovae

    SN 1054 remnant (Crab Nebula)A supernova is an event in which a star destroys itself in an explosion which can briefly become as luminous as an entire galaxy.This list of supernovae of historical significance includes events that were observed prior to the development of photography, and individual events that have been the subject of a scientific paper that contributed to supernova theory.

  5. Cassiopeia A - Wikipedia

    en.wikipedia.org/wiki/Cassiopeia_A

    Cassiopeia A ( Cas A) ( listen ⓘ) is a supernova remnant (SNR) in the constellation Cassiopeia and the brightest extrasolar radio source in the sky at frequencies above 1 GHz. The supernova occurred approximately 11,000 light-years (3.4 kpc) away within the Milky Way; [ 2 ][ 3 ] given the width of the Orion Arm, it lies in the next-nearest ...

  6. Supernova - Wikipedia

    en.wikipedia.org/wiki/Supernova

    A supernova ( pl.: supernovae or supernovas) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion. The original object, called the progenitor, either collapses to a neutron star or black hole, or is completely ...

  7. List of supernova candidates - Wikipedia

    en.wikipedia.org/wiki/List_of_supernova_candidates

    This is a list of supernova candidates, or stars that are believed to soon become supernovae. Type II supernova progenitors include stars with at least 8~10 solar masses that are in the final stages of their evolution. Prominent examples of stars in this mass range include Antares, Spica, [ 2] Gamma Velorum, [ 3] Mu Cephei, and members of the ...

  8. List of supernova remnants - Wikipedia

    en.wikipedia.org/wiki/List_of_supernova_remnants

    List of supernova remnants. This is a list of observed supernova remnants (SNRs) in the Milky Way, as well as galaxies nearby enough to resolve individual nebulae, such as the Large and Small Magellanic Clouds and the Andromeda Galaxy . Supernova remnants typically only survive for a few tens of thousands of years, making all known SNRs fairly ...

  9. Nebula - Wikipedia

    en.wikipedia.org/wiki/Nebula

    Other nebulae form as the result of supernova explosions; the death throes of massive, short-lived stars. The materials thrown off from the supernova explosion are then ionized by the energy and the compact object that its core produces. One of the best examples of this is the Crab Nebula, in Taurus.