Reality (as revealed by experimental measurements):
1. Earth’s heat source is a pulsar, the same nuclear furnace that made our elements. That conclusion is based on data from hundreds of analyses of meteorites, planets, the Sun, the Moon, and solar emissions.
2. The Sun and its heat and particle emissions come from
a.) Neutron-repulsion & -emission of the solar core (60%),
b.) Neutron-decay of the product to Hydrogen (5%),
c.) Fusion of the product to Helium (35%).
That conclusion is based on data from analyses of atomic rest masses of the 3,000 atoms that comprise the entire visible universe and Einstein’s conclusion (E = mc^2).
NASA and DOE have selectively hidden, avoided, or manipulated the data for decades to help politicians avoid reality #1 and #2, respectively.
But reality will not be avoided.