…toms) was insufficient to explain the internal motions of these clusters. He dubbed this new matter dunkle materie, or dark matter, an observation that was largely ignored until the 1970s, when normal matter was be…11 Scientific advances of the last 100 years gave us our entire Universe37910Ethan SiegelTed JonesFollowJul 24, 2017 · 1 min readWe SO should have stuck with this term.