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stress outlined white star U+2729 circled white star U+272A open center black star U+272B black center white star U+272C outlined black star U+272D heavy outlined black star U+272E pinwheel star U+272F shadowed white star U+2730 white medium star ⭐: U+2B50 black small star ⭑ U+2B51 white small star ⭒ U+2B52 glowing star 🌟: U+1F31F ...
The following other wikis use this file: Usage on ar.wikipedia.org قزم أحمر; كتلة المشتري; Usage on ca.wikipedia.org Teide 1; Usage on eo.wikipedia.org
Neutron stars are stellar remnants produced when a star of around 8–9 solar masses or more explodes in a supernova at the end of its life. They are usually produced by stars of less than 20 solar masses, although a more massive star may produce a neutron star in certain cases. [2] 4U 1820-30: 9.1 Pulsar [3] Lich Pulsar (PSR B1257+12) 10 Pulsar
An asterism is an observed pattern or group of stars in the sky. Asterisms can be any identified pattern or group of stars, and therefore are a more general concept than the 88 formally defined constellations. Constellations are based on asterisms, but unlike asterisms, constellations outline and today completely divide the sky and all its ...
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The Hertzsprung–Russell diagram showing the location of main sequence dwarf stars and white dwarfs. A dwarf star is a star of relatively small size and low luminosity. Most main sequence stars are dwarf stars. The meaning of the word "dwarf" was later extended to some star-sized objects that are not stars, and compact stellar remnants that ...
A Siemens star, or spoke target, is a device used to test the resolution of optical instruments, printers, and displays. It consists of a pattern of bright "spokes" on a dark background that radiate from a common center and become wider as they get further from it.
Barnard's Star is a small red dwarf star in the constellation of Ophiuchus.At a distance of 5.96 light-years (1.83 pc) from Earth, it is the fourth-nearest-known individual star to the Sun after the three components of the Alpha Centauri system, and is the closest star in the northern celestial hemisphere. [15]