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(Supermassive black holes up to 21 billion (2.1 × 10 10) M ☉ have been detected, such as NGC 4889.) [16] Unlike stellar mass black holes, supermassive black holes have comparatively low average densities. (Note that a (non-rotating) black hole is a spherical region in space that surrounds the singularity at its center; it is not the ...
The supermassive black hole at the center of the Milky Way, associated with the radio source Sagittarius A* (3.7±0.2 × 10 6 M ☉) [165] 8 × 10 36 kg Omega centauri, the largest globular cluster in the Milky Way, containing approximately 10 million stars. 10 37 10 38 10 39 10 40 10 41: 1.98 × 10 41 kg
109 Gm (0.7 au) – distance between Venus and the Sun; 149.6 Gm (93.0 million mi; 1.0 au) – average distance between the Earth and the Sun – the original definition of the astronomical unit; 199 Gm (1.3 au) – diameter of Rho Persei, an asymptotic giant branch star, fusing carbon into neon in a shell surrounding an inert core. [180]
0.000 000 000 000 000 000 000 000 000 001: Notes. Coherent and non-coherent SI units . The base units and the derived units formed as the ...
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Detroit Lions wide receiver Jameson Williams has been fined $19,697 by the NFL for "Unsportsmanlike Conduct (obscene gestures)" for his dive into the end zone last week against the Jacksonville ...
Pale Blue Dot: A Vision of the Human Future in Space is a 1994 book by the astronomer Carl Sagan.It is the sequel to Sagan's 1980 book Cosmos and was inspired by the famous 1990 Pale Blue Dot photograph, for which Sagan provides a poignant description.
By definition, 36 AWG is 0.005 inches in diameter, and 0000 AWG is 0.46 inches in diameter. The ratio of these diameters is 1:92, and there are 40 gauge sizes from 36 to 0000, or 39 steps. Because each successive gauge number increases cross sectional area by a constant multiple, diameters vary geometrically .