In the 1970s, NASA flung four spacecraft into the void, each destined to leave the solar system, and each bearing a map that pointed toward Earth. The map relies on pulsars — or the weird, whirling corpses of formerly bright stars scattered throughout the galaxy — to aid celestial navigators. Astronomer Scott Ransom and science journalist Nadia Drake (whose dad designed the map!) will talk about how the map works, if it can be improved, and some of the surprising ways pulsars are teaching us about the universe.
Want to see both lectures? The Lecture Package includes access to both Finding Earth: A Roadmap for Aliens AND Star Tales and Timelapses with Jack Fusco and Jeff Bartlett for only $25.00!