You might have a pretty rigid understanding of the way stuff should look at the most basic level. It should have a nucleus that is orbited by electrons. The nucleus should have protons and neutrons, inside each of which reside three quarks.
Tagged With particle astrophysics
The search for dark matter -- the stuff that seems to make up most of the mass in the Universe, but which is invisible to us -- is loaded with new ideas, tantalising hints, and incredibly advanced experiments. Unfortunately, none of science's best efforts have yielded any definitive proof of dark matter's identity.