View Full Version : is jupiter really a planet?
2004-Jan-06, 02:00 AM
just wondering what arguments are there for jupiter being a planet rather than a brown dwarf star?
2004-Jan-06, 02:06 AM
cloudy, stormy atmospheres on brown dwarfs, the celestial bodies that are less massive than stars but have more mass than giant planets like Jupiter. <<<<That one?
I hope the website still working ><
2004-Jan-06, 04:03 AM
i wonder if it is possible that jupiter at some stage was a brown dwarf and has lost mass - just a thought
2004-Feb-29, 03:31 PM
If i remember corectly jupiter has a cor temperature of 30,000 'c, In orde for nuclea fusion to start the core has to be 15 million degrees. For this to happen jupiter would have to be 8 time bigger. Which means a brown dwafs size would have to be someware inbetween.
As for jupiter once being bigger and evaperating. I have never thougth of it my self. But i thinks it is possible after all steven hawkins think even black holes might evapourate over millions or billlions oy years.
2004-Mar-01, 07:02 AM
Is it at all possible that Jupiter is a very slowly evaporating version of a cthonian... (i apologise if this is a silly question, just had sports day at work)
2004-Mar-01, 08:33 AM
For Jupiter to be a brown dwarf it would need to be much, much bigger. The amount of mass it would have needed to lose from it forming to toaday would be phenomenol.
2004-Mar-03, 11:42 PM
If Jupiter is not really a planet then Saturn,Uranus,and Neptune are not ones either.
2004-Mar-05, 01:22 AM
Its a matter of semantics I suppose. Gas giants can be considered planets when they are orbiting nearby stars. They just aren't "terrestrial" planets.
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