I am 9 years old. Can anyone tell me the answer on this one?
Hi quanum12345, that's a great question! Many scientists are working very hard to figure the answer out. What we know is that there is at least about 5 times as much dark-matter mass, as 'regular' (called, "baryonic") mass. Also, for a number of reasons, we expect that the mass of each dark-matter particle is much-much more massive than any of the particles which make up normal matter (i.e. protons, neutrons, especially electrons).I am 9 years old. Can anyone tell me the answer on this one?