n
(astronomy, physics) The first generally accepted and confirmed black hole. A black hole in a high-mass X-ray binary (HMXB) with a blue supergiant companion (HD 226868), located in the constellation Cygnus.
n
(astronomy) Abbreviation of InterGalactic Medium.
n
(astronomy, countable) Alternative spelling of ly; light-year
n
(astrophysics) Short for mass-to-light ratio.
n
(astronomy) Abbreviation of massive black hole (“supercollapsar”).
n
(astronomy) A very tiny black hole, small enough to be influenced by quantum effects.
n
(astronomy, physics) Abbreviation of non-black hole. (any theoretical alternative to black holes)
n
Initialism of primordial black hole. [A black hole which is formed by direct collapse of primordial gas and dark matter, before the first stars ever formed, in a Big Bang universe.]
n
(astronomy) A star which is cooling and contracting to become a neutron star.
n
(astronomy) Abbreviation of stellar black hole (“collapsar”).
n
(astronomy) Abbreviation of supermassive black hole. [(astronomy) Any black hole with a mass from 10⁵ to 10¹⁰ times that of the Sun.]
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(astronomy) Abbreviation of stellar-mass black hole.
n
(astronomy) Any black hole with a mass from 10⁵ to 10¹⁰ times that of the Sun.
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