I'm sure it is a brown dwarf dammit - I studied Astrophysics at university for three years I should know!
I should know...:roll:
:lol:
edit:
It seems some astronomers think Jupiter displays many brown dwarf characterisitics, such as 'weather' but is maybe not dense enough to be a brown dwarf, and doesn't radiate energy - interestingly brown dwarfs initially radiate 'light' as a result of 'burning' - De -> He, and then later as a result of the release of Gr energy as they contract.
See, I told you, I should know....
In future I'll rely on google and not on my education...:-D