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Originally posted by Arken
A Brown Dwarf with an atmosphere and water vapor clouds?
LIFE?edit on 24-3-2011 by Arken because: (no reason given)
Originally posted by Illustronic
reply to post by Ophiuchus 13
The star with the most gravity, mass, not necessarily size, wins the fuel battle in a binary system, of at least one spent star, or a star of insufficient mass to conduct fusion.
brown dwarfs heavier than 13 MJ do fuse deuterium and those above ~65 MJ also fuse lithium.
...Io is the most geologically active object in the Solar System. This extreme geologic activity is the result of tidal heating from friction generated within Io's interior as it is pulled between Jupiter and the other Galilean satellites...
Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence.
Originally posted by Arbitrageur
It's a bit of a misnomer to call it a star, which usually refers to an object with at least hydrogen-1 fusion.