Neil deGrasse Tyson: Gaps in the Periodic Table

How did early scientists know to leave gaps for undiscovered elements on the periodic table? Astrophysicist Neil deGrasse Tyson tells the story of how Dmitri Mendeleev used a subatomic particle to organize the elements. Also, find out how helium got its name - and who uses more of the voice-changing element than Macy’s. Finally, Neil tells comic co-host Chuck Nice what happened when his personal radiation detector went off in a hospital.

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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

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