Fundamental problems in Cosmology - Dark Matter
Dark Matter The universe looks very different now. It’s a lot bigger. Our universe is only a tiny part of the cosmos. What is in this Cosmos? We can't see what's out there. We will detect it if we look for it. The gravitational pull we call Dark Energy must come from some very massive stuff. What is this “stuff”? Oddly the clue may lie within black holes. All of our stars and galaxies will eventually end up in a black hole. It will take time. But that is the fate of all baryonic matter. Actually I prefer to call it Light Matter. Baryon comes from the Greek meaning heavy. As we will see this is a particularly bad choice. I call it Light Matter for 2 reasons. It produces the light/radiation in our universe. Unlike Dark Matter. It is many orders of magnitude less dense than the core of black holes and Dark Matter. So we have Light Matter which we can see but is less than 5% of the observable universe and Dark Matter which is a about 24%. All Li...
