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The Vergina Sun (Greek: Ήλιος της Βεργίνας, romanized: Ilios tis Vergínas, lit. 'Sun of Vergina'), also known as the Star of Vergina, Vergina Star or Argead Star, is a rayed solar symbol first appearing in ancient Greek art of the period between the 6th and 2nd centuries BC. The Vergina Sun proper has sixteen triangular rays ...
A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.
LMXB – (celestial object) low-mass x-ray binary, an X-ray-luminous binary star system in which one of the stars is a neutron star or black hole that is stripping material away from the other star in the system; LN2 – (instrumentation) liquid nitrogen; LOAN – Longitude of ascending node; LOFAR – (telescope) LOw Frequency ARray, for radio ...
The small Solar System body 4 Vesta is large enough to have undergone at least partial planetary differentiation. Stars like the Sun are also spheroidal due to gravity's effects on their plasma, which is a free-flowing fluid. Ongoing stellar fusion is a much greater source of heat for stars compared to the initial heat released during their ...
The principal component of the Solar System is the Sun, a G-type main-sequence star that contains 99.86% of the system's known mass and dominates it gravitationally. [37] The Sun's four largest orbiting bodies, the giant planets, account for 99% of the remaining mass, with Jupiter and Saturn together comprising more than 90%.
The legislation allows public school teachers to answer student questions "about scientific theories of how the universe and/or life came to exist.” It was proposed after Republican Senate ...
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For example, in the vicinity of a typical star the ratio of radiation-to-gravity force on a hydrogen atom or ion, = =,, hence radiation force is negligible in general, except perhaps around a luminous O-type star of mass , or around a black hole accreting gas at the Eddington limit so that its luminosity-to-mass ratio / is defined by =.