
Brown dwarfs are more massive than planets but not quite as massive as stars. Generally speaking, they have between 13 and 80 times the mass of Jupiter. A brown dwarf becomes a star if its core pressure gets high enough to start nuclear fusion. https://photojournal.jpl.nasa.gov/catalog/PIA23685
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NASA ID
PIA23685
Date Created
April 9, 2020
Center
JPL
Media Type
image
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