Neil Degrasse Tyson is director of the Hayden Planetarium at the American Museum of Natural History and the author of many books, including Astrophysics for People in a Hurry .
Twitter @JRichardGott.
Richard Gott is professor emeritus of astrophysical sciences at Princeton.
J.
Strauss is professor of astrophysical sciences at Princeton University.
Twitter @neilTyson Michael A.
Neil Degrasse Tyson is director of the Hayden Planetarium at the American Museum of Natural History and the author of many books, including Astrophysics for People in a Hurry