Our guest is Dr. Sanjoy Som, a scientist, engineer, and social entrepreneur passionate about space exploration, astrobiology, and science communication. Dr. Som is the founder and CEO of the nonprofit Blue Marble Space and the original host of NASA's Ask an Astrobiologist!

This program is an interactive talk show where our guest will answer questions from our host, Dr. Graham Lau, followed by your questions submitted via Twitter and YouTube. For more information, visit the official website of Ask An Astrobiologist.