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A Remarkable Direct Image Of A Nearby Super-Jupiter
io9 ^
| George Dvorsky
Posted on 05/11/2015 1:38:31 PM PDT by SunkenCiv
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To: outofsalt
To: Norm Lenhart
Just that it’s not really close to being a star with only 11 Jupiter masses. But it is close to being a brown dwarf, which is a sort of transitional category between planet and star.
22
posted on
05/11/2015 2:21:34 PM PDT
by
Telepathic Intruder
(The only thing the Left has learned from the failures of socialism is not to call it that)
To: Norm Lenhart
23
posted on
05/11/2015 2:27:34 PM PDT
by
Talisker
(One who commands, must obey.)
To: Telepathic Intruder
I meant the actual fusion thing. What I am curious about is the timeframe.
I would assume the core being the highest pressure/temp is the starting point, but considering the sheer mass/size of a star, how fast does the entire ‘star’ become involved in the reaction? is it more a ‘slow burn’ or ‘blinding flash”?
To: Talisker
I really need to watch that movie.
To: itsahoot
You've filtered out the distortions now let's adjust the focus.
Toldja he didn't come from Earth.
26
posted on
05/11/2015 3:02:21 PM PDT
by
TigersEye
(STONE COLD ZOMBIE SCOURGE)
To: rjsimmon
Due to geometric considerations, 11x the mass (roughly volume) wouldn’t be that much bigger, diameter-wise.
27
posted on
05/11/2015 3:06:54 PM PDT
by
fwdude
(The last time the GOP ran an "extremist," Reagan won 44 states.)
To: SunkenCiv
Red Dwarf.
“It’s cold outside, no kind of atmosphere, I’m all alone, more or less....”
28
posted on
05/11/2015 3:11:46 PM PDT
by
Secret Agent Man
(Gone Galt; Not averse to Going Bronson.)
To: Norm Lenhart
I'm not exactly sure how it works in brown dwarfs fusing deuterium, which is only a tiny fraction of the total hydrogen, but stars only fuse elements in the core. When that's used up, the star dies. The more massive the star, the shorter the lifespan on the order of around mass to the power of -3.5. This is a lengthy topic, however, but the Wiki page should give you a decent overview:
http://en.wikipedia.org/wiki/Stellar_evolution
29
posted on
05/11/2015 3:33:50 PM PDT
by
Telepathic Intruder
(The only thing the Left has learned from the failures of socialism is not to call it that)
To: Telepathic Intruder
I’ll check it out, Thanks!
To: KevinDavis; annie laurie; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; Mmogamer; ...
31
posted on
05/11/2015 3:36:59 PM PDT
by
SunkenCiv
(What do we want? REGIME CHANGE! When do we want it? NOW!)
To: Norm Lenhart
Actually that’s mass^-2.5, but minor point. For example, a star twice the mass of our sun will last 18% as long, or 1.8 billion years. Half the mass, 5.6 times as long.
32
posted on
05/11/2015 3:40:54 PM PDT
by
Telepathic Intruder
(The only thing the Left has learned from the failures of socialism is not to call it that)
To: Norm Lenhart
Supernovas occur at the end of the life of really massive stars. Not itsy-bitsy ones.
To: SunkenCiv
That looks like my typical image of anything when I take a photo.
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