31 replies to this topic

[praetorian-legio XIII]

So 100 light years is in "our neighborhood"? And whys it so hot without a star to warm it?

[HawkLord]

I am just waiting for some nut to come on and say it has to be the fabled "Nibiru"

[Talion]

Planet X-
NIBIRU
"Planet of the Crossing", the invading planet that joined
our solar system to bring the seeds of life (DNA) with it.
Oops I guess I am the first nut job, , ha

Edited by Talion, 15 November 2012 - 04:37 PM.

[pallidin]

praetorian-legio XIII, on 15 November 2012 - 04:09 PM, said:

So 100 light years is in "our neighborhood"? And whys it so hot without a star to warm it?

That's what I was wondering.
Maybe it's super massive and the internal pressure is generating this heat, but not so massive as to become a star.

I think the article said something along those lines

[Curley Fryes]

They keep looking and looking, going farther and farther away. Eventually they're going to see something they don't want to see!

[freetoroam]

HawkLord, on 15 November 2012 - 04:31 PM, said:

I am just waiting for some nut to come on and say it has to be the fabled "Nibiru"

well if it is, it had better get its skates on, we are not far from 2013.

[Matthew Davids]

This planet was going to be a star but did not grow massive enough to fuse hydrogen into helium. They call these brown dwarfs they are just a big gas giant really.

[Mako_Torriblaidd]

NIIBIIIRRUUU!!! No... just a planet who may have been lost... oh well.

[Hawkin]

Wonder how they determined it's 400C?

[C235]

MAAMAAAAA?!

[Artaxerxes]

How did they determine it was 400C? They stuck a thermometer in it's butt.

[BaneSilvermoon]

Gravitorbox, on 14 November 2012 - 12:50 PM, said:

It is a planet because it meets all the necessary criteria to be defined as a planet.

This does seem to fit the requirements of being an extrasolar planet.

Edited by BaneSilvermoon, 17 November 2012 - 08:06 PM.

[kobolds]

we read alot of planet/star discovery but I wonder when can we see the close up photo of those planet/star.

[Dan'O]

It is Mongo, the home of Ming the Merciless.

[Waspie_Dwarf]

Hasina, on 14 November 2012 - 03:23 PM, said:

would that make it a planet or a brown dwarf?

It's not a brown dwarf, it's too small. It has a mass of "between four and seven times that of Jupiter", brown dwarves have masses of 15 to 75 times that of Jupiter. As for it not being a planet because it isn't in orbit around a star, well the International Astronomical Union definition of a planet is limited to solar system objects only, they have not defined what constitutes a planet outside of our solar system. Until they do "planet" is the best fit description of the object.

Mnemonix, on 14 November 2012 - 05:08 PM, said:

Maybe it will fly into orbit around a star some time.

They should monitor it and maybe the'll witness a star adopting a homeless planet.

We would have to monitor it for an awfully long time, hundreds of millions, if not billions, of years.

praetorian-legio XIII, on 15 November 2012 - 04:09 PM, said:

So 100 light years is in "our neighborhood"? And whys it so hot without a star to warm it?

pallidin, on 15 November 2012 - 05:28 PM, said:

That's what I was wondering.
Maybe it's super massive and the internal pressure is generating this heat, but not so massive as to become a star.

I think the article said something along those lines

Pallidin is correct. Gravity tries to compress large planets causing massive internal pressure and heat at the core. The processes of conduction and convection will cause some of this heat to rise to the surface. This happens, to a lesser degree, with the gas giants in our solar system. The surface of Jupiter receives more heat energy internally than it does from the sun.

Matthew Davids, on 15 November 2012 - 05:50 PM, said:

This planet was going to be a star but did not grow massive enough to fuse hydrogen into helium. They call these brown dwarfs they are just a big gas giant really.

Not entirely true. Planets (even gas giants) form in a slightly different way to stars (including brown dwarves). Stars form from the gas in a nebula. Planets form from the dust left over after the formation of the stars, so although on the surface a gas giant may appear like a failed star, having enough mass to form a large atmosphere of left over hydrogen, it's core is rock and very different from that of a star.

Mag357, on 15 November 2012 - 11:28 PM, said:

Wonder how they determined it's 400C?

By measuring the wavelength of infra-red light it emits.