Planetary Radio: Space Exploration, Astronomy and Science

Planetary Radio Extra: Shining a Million Watt Flashlight on an Asteroid

19:35 | Jun 28th, 2016

PlanRad’s celebration of Asteroid Day (June 30th) continues as we call UCLA grad student Adam Greenberg at the Arecibo Observatory in Puerto Rico.Learn more about your ad choices. Visit megaphone.fm/adchoices