A quick bonus episode for my American listeners. Voting is the keystone of our democracy, and your voice deserves to be heard. This episode goes over some common voting questions. For more, see www.ballotpedia.org.
Dr. Varoujan Gorjian returns to the show! He explains what supermassive black holes are and how they work. He also tells us about an elegant technique that astronomers use to determine the size of the debris cloud around black holes.