the orbit calculations, I wanted to provide a couple of remarks about this week's colloquium where Prof. Tanedo, UCI and UCR, talked about his collaborations study of dark sunshine. Dark sunshine is the term used to describe the conjectured production of observable photons generated by dark matter annihilation in the sun, other stars or even the Earth. Gravity is the primary natural force that interacts with dark matter and given that it fills the universe, it should be more concentrated where the gravitational potential is high, which is why it tends to clump in large blobs in the halo around galaxies, and should also tend to collect in the center of large objects like stars and the planets also. Then when large collections of dark matter particles get close enough together, more and more annihilations occur, which should result in visible effects.
Resident Astronomer George