Radioactive decay is the main source of the earth's interior heat: fact or theory?

Question

It's believed the main reason that the interior of the Earth hasn't cooled down in 4 billion years is because of the ongoing decay of radioactive elements that keeps adding more heat than is lost to the various cooling processes. Is this a proven fact or are there other possibilities?

Answer 1

Finding the main source of the earth's interior heat is one of today's big questions in geology. Geophysicists and geologists have proposed several theories, one of which is that the heat is caused by radioactive decay. The research center. Kamioka Liquid-Scintillator Antineutrino Detector, or KamLand, is situated in Toyama, Japan, and is being used to detect neutrinos that could be used to strengthen this theory. However, for now, we will have to wait and see what the research tells us.