18 What Holds Each Galaxy Together Dark Matter

WHAT HOLDS EACH GALAXY TOGETHER: DARK MATTER An allencompassing theory of every thing must explain all phenomenafrom quarks to the cosmos. dark matter is an enormous mystery. Its a huge component of the energy and matter content of the universe; it dominates more than our familiar form of matter. This means that we cant possibly hope of inventing a theory of everything that doesnt solve this particular conundrum.