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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. Betelgeuse - Wikipedia

    en.wikipedia.org/wiki/Betelgeuse

    Estimates range from 10,000 years to a maximum of 140,000 years. Betelgeuse appears to undergo short periods of heavy mass loss and is a runaway star moving rapidly through space, so comparisons of its current mass loss to the total lost mass are difficult. [18] [173]

  4. Stellar collision - Wikipedia

    en.wikipedia.org/wiki/Stellar_collision

    About half of all the stars in the sky are part of binary systems, with two stars orbiting each other. Some binary stars orbit each other so closely that they share the same atmosphere, giving the system a peanut shape. While most such contact binary systems are stable, some do become unstable and either eject one partner or eventually merge.

  5. Stellar black hole - Wikipedia

    en.wikipedia.org/wiki/Stellar_black_hole

    In 1939, it was estimated at 0.7 solar masses, called the TOV limit. In 1996, a different estimate put this upper mass in a range from 1.5 to 3 solar masses. [3] The maximum observed mass of neutron stars is about 2.14 M ☉ for PSR J0740+6620 discovered in September, 2019. [4] In the theory of general relativity, a black hole could exist of ...

  6. Scientists warn that a crucial ocean current could collapse ...

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  7. Giant bubbles on the surface of a nearby star preview the ...

    www.aol.com/giant-bubbles-surface-star-glimpse...

    The images show the surface of the star R. Doradus, a red giant star 180 light-years away in the Dorado constellation. The star has a diameter about 350 times that of the sun, and it serves as a ...

  8. Collapsar - Wikipedia

    en.wikipedia.org/wiki/Collapsar

    A collapsar (a portmanteau word formed by "collapsed" + "star") 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 ...

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