Dark matter and energy are theories that are a little more complicated than that, in that astronomers can observe gravitational clustering more powerful than the regular matter allows for; dark energy is beyond the areas of my understanding. So far it seems to me the best guess is Shut up and Calculate.
Dark matter and energy are theories that are a little more complicated than that, in that astronomers can observe gravitational clustering more powerful than the regular matter allows for; dark energy is beyond the areas of my understanding. So far it seems to me the best guess is Shut up and Calculate.