Brown Dwarf

On July, 1995 ZetaTalk described Planet X as a smoldering brown dwarf that sustained life despite a long trek out in space away from the Sun, because it emitted heat and light from its molten core.

The 12th Planet has both heat and light, generated from within its core. Life on the 12th Planet, which is inhabited by a large hominoid indistinguishable from humans other than by its size, experiences continuous day. Life that has evolved there does not sleep, but rests. The light is diffused in the atmosphere, and returns to the land surface, but emerges from the core to interact with the atmosphere only via the surface of the deep oceans, which cover the majority of the planet's surface. You may equate this to volcanic activity, where the Earth has numerous places both above ground and under the oceans that ooze molten lava. Just so the 12th Planet has places where the molten and churning substance in its core escapes to the surface.

ZetaTalk: 12th Planet Glow written July 15, 1995

Human scientists seem to have no description for such a traveling planet. A brown dwarf must be gaseous and a failed sun, therefore much larger than Jupiter. No planet sized object, a solid object, could emit light and heat. But cracks in the human argument started to appear.

Brown Dwarf Spotted Close to Star
May 22, 2002

Astronomers using adaptive optics technology on the Gemini North Telescope have observed a brown dwarf orbiting a low-mass star at a distance comparable to just three times the distance between the Earth and Sun. This is the closest separation distance ever found for this type of binary system using direct imaging. The record-breaking find is just one of a dozen lightweight binary systems observed in the study. Together, they provide a new perspective on the formation of stellar systems and how smaller bodies in the Universe (including large planets) might form. With an estimated mass of 38-70 times the mass of Jupiter, the newly identified brown dwarf is located just three times the Sun-Earth distance (or 3.0 Astronomical Units) from its parent star.’

And now, after over a decade of ridicule, human scientists are admitting that the Zetas were right all along!

Starless Planets May be Habitable After All
20 February 2011
http://www.newscientist.com/article/mg20928005.200-starless-planets-may-be-habitable-after-all.html

Liquid water may survive on free-floating planets that have no star to warm them. If they also support life, they could act as stepping stones to spread life around the galaxy. Gravitational tussles with other planets or passing stars can eject planets from their solar systems. But even in the cold of space, these wayward worlds could stay warm, thanks to the decay of radioactive elements in their rocky cores. Dorian Abbot and Eric Switzer of the University of Chicago calculate that rocky planets with a similar mass to Earth could remain warm enough to keep water liquid under thick, insulating ice sheets for over a billion years. A planet with the same fraction of water as Earth could keep a subsurface ocean liquid if it was 3.5 times Earth's mass. But a planet with 10 times Earth's water concentration could do this if it weighed just one-third as much as Earth, they say (arxiv.org/abs/1102.1108). "It's a really interesting idea," says Lisa Kaltenegger of the Harvard-Smithsonian Center for Astrophysics. "But we would have to land on [a planet] and burrow down to see if life is possible."