Moreno, when you make an assertion on this forum we expect you to backup your assertion with whatever evidence caused you to believe your assertion has merit. No one expects you to be a PHD in any subject you want to investigate but it is expected that you do give us more than " I don't understand therefore its not understandable."
I'm not sure why you have a problem with this... can you elaborate?
Believe is a bit less than precise term Moreno and I'm not so sure that everyone believes "all the heat produced" inside of Pluto is caused by radioactivity. Energy from the accretion of Pluto has to be taken into account as well as the heat produced from tidal forces in the Plutonium system. Then there is this concept: Pluto may be small but it could have some smaller version of this.
http://www.spacedaily.com/news/earth-03k.html
Not necessarily, tidal flexing and impacts import energy to a body in space.
Seems reasonable to me but I would like to see a citation for this.
http://www.spacedaily.com/news/earth-03k.html
What would we find if we were to dig a hole all the way down to the centre of the Earth? According to high school science books we would discover a liquid iron alloy core and a smaller solid inner core at the center. For ten years, geophysicist J. Marvin Herndon has presented increasingly persuasive evidence that at the very centre of the Earth, within the inner core, there exists a five mile in diameter sphere of uranium which acts as a natural nuclear reactor.
Dr. Herndon likes to term this beast the "georeactor".
Think of the early Earth as having been like a spherical steel hearth. A hot ball of liquid elements freshly formed out of the primordial disc surrounding our sun. The densest metals sinking down by force of gravity while lighter materials "floated" outwards. Uranium is very dense. At about 19 grams per cubic centimeter, it is 1.6 times more dense than lead at the Earth's surface. But deep within our planet density depends only on atomic number and atomic mass. Uranium, having the greatest atomic number and atomic mass, would be the most dense substance in our planet and will ultimately end up at the center of the Earth. The implications of this relatively new georeactor hypothesis are far reaching indeed. Not only does it threaten to change the way we view our own Earth and planetary formation in general but the very origin of the stars might need to be rewritten.
I lost some of my post to an 40... something error, I'll try to clear it up after I eat...