Stars {brown dwarf} can have mass 13 to 80 times Jupiter mass or 7% Sun mass. Color is red, because it is ten times hotter than Jupiter. It burns deuterium but not hydrogen. It cannot burn lithium but has methane. Galaxy has 100,000,000,000 brown dwarfs. Objects {sub-brown dwarf} with mass less than 13 times Jupiter mass do not burn but only have heat from gravitational collapse.
Physical Sciences>Astronomy>Star>Kinds
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Date Modified: 2022.0224