Neil deGrasse Tyson on New Earth-Like Planet and Black Holes

NASA’s Kepler mission has confirmed the discovery of a  planet in the habitable zone of a sun-like star. A NASA researcher says the Earth-like planet would have a surface temperature around 70 degrees Fahrenheit. This makes it a so-called “Goldilocks planet” –  not too hot, not too cold, just right to support life. Researchers have also measured the largest black holes yet. A team of UC Berkeley  scientists have confirmed the discovery of the two biggest black holes yet to be documented. Each black hole is 10 billion times larger than our sun. Neil deGrasse Tyson, director of the Hayden Planetarium and host of Star Talk Radio, discusses these recent discoveries.