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  2. Gravitational collapse - Wikipedia

    en.wikipedia.org/wiki/Gravitational_collapse

    Gravitational collapse of a massive star, resulting in a Type II supernova. Gravitational collapse is the contraction of an astronomical object due to the influence of its own gravity, which tends to draw matter inward toward the center of gravity. [1] Gravitational collapse is a fundamental mechanism for structure formation in the universe.

  3. Star formation - Wikipedia

    en.wikipedia.org/wiki/Star_formation

    The W51 nebula in Aquila - one of the largest star factories in the Milky Way (August 25, 2020). Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars. [1]

  4. Jeans instability - Wikipedia

    en.wikipedia.org/wiki/Jeans_instability

    At the same time, gravity will attempt to contract the system even further, and will do so on a free-fall time = / /, where is the universal gravitational constant, is the gas density within the region, and = / is the gas number density for mean mass per particle (μ = 3.9 × 10 −24 g is appropriate for molecular hydrogen with 20% helium by ...

  5. AOL Video - Serving the best video content from AOL and ...

    www.aol.com/video/view/5-dead-in-stage-collapse...

    The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

  6. Stellar black hole - Wikipedia

    en.wikipedia.org/wiki/Stellar_black_hole

    The angular momentum of a stellar black hole is due to the conservation of angular momentum of the star or objects that produced it. The gravitational collapse of a star is a natural process that can produce a black hole. It is inevitable at the end of the life of a massive star when all stellar energy sources are exhausted.

  7. Collapsar - Wikipedia

    en.wikipedia.org/wiki/Collapsar

    Collapsar type based on initial mass and metallicity. A collapsar is a star which has undergone gravitational collapse. [1] When a star no longer has enough fuel for significant fusion reactions, there are three possible outcomes, depending on the remnant star's mass: If it is less than the Chandrasekhar limit (1.4 solar masses), the star will stabilize and shrink, becoming a white dwarf ...

  8. Category:Disasters in Indiana - Wikipedia

    en.wikipedia.org/wiki/Category:Disasters_in_Indiana

    Indiana State Fair stage collapse This page was last edited on 3 June 2024, at 21:57 (UTC). Text is available under the Creative Commons Attribution ...

  9. Pair-instability supernova - Wikipedia

    en.wikipedia.org/wiki/Pair-instability_supernova

    A different reaction mechanism, photodisintegration, follows the initial pair-instability collapse in stars of at least 250 solar masses. This endothermic (energy-absorbing) reaction absorbs the excess energy from the earlier stages before the runaway fusion can cause a hypernova explosion; the star then collapses completely into a black hole. [5]