Finding a New Earth: Exoplanets and the Habitable Zone

From a channel Lumen includes in full: The channel is a long-running college public lecture series in which working astronomers and mission leads (Drake, Batalha, Elkins-Tanton, Beckwith) explain astronomical research to lay audiences. Every transcript is a moderated full-length lecture introduction by instructor emeritus Andrew Fraknoi, and all titles describe the scientific topic. Playful titles like 'How I Killed Pluto' are descriptive rather than clickbait, and the 'Doomsday 2012' talk debunks pseudoscience rather than promoting it.