Is Jupiter close to being a brown dwarf star?

Not even close. Its mass is about 80 times too small to provide core temperatures needed for starting thermonuclear fusion. It is also 10 times less massive than the expected lower limit for Brown Dwarf stars which may be capable of fusing hydrogen for a short while in their evolution, but cannot sustain this once they grow cooler as the age.


Copyright 1997 Dr. Sten Odenwald

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