Question

Which discovery by astronomer Vera Rubin helped prove the existence of dark matter?

Answer 1

discovery of anti matterby vera rubin on the basis odf stellar velocities .it is known as dark matter because all the rules which we follow in chemistry is tottally opp.for anti matter ..
as in matter electrons revolve while in anti matter positoron(when electron have positve charge) revolves in orbit ..and protons of dark matter is negatively charged . it mainly obtained from the waste of particle acclerator