What kind of signals are we searching for from aliens? What are technosignatures and biosignatures? How are we looking for non-intelligent life? Is there any hope of finding life in our own solar system? I discuss these questions and more in today’s Ask a Spaceman!

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Big thanks to my top Patreon supporters this month: David B, Frank T, Tim R, Alex P, Tom Van S, Mark R, Alan B, Craig B, Richard K, Steve P, Dave L, Chuck C, Stephen M, Maureen R, Stace J, Neil P, lothian53 , COTFM, Stephen S, Ken L, Debra S, Alberto M, Matt C, Ron S, Joe R, Jeremy K, David P, Norm Z, Ulfert B, Robert B, Fr. Bruce W, Nicolai B, Sean M, Edward K, Callan R, Darren W, Tracy F, Sarah K, Bill H, Steven S, Ryan L, Ella F, Richard S, Sam R, Thomas K, James C, Jorg D, R Larche, Syamkumar M, John S, Fred S, Homer V, Mark D, Brianna V, Colin B, Bruce A, Steven M, Brent B, Bill E, Tim Z, Thomas W, Linda C, Joshua, David W, Aissa F, Tom G, Marc H, Avery P, Scott M, Katelyn, Thomas H, Farshad A, Matthias S, Kenneth D, Maureen R, Michael W, Scott W, David W, Neuterdude, Cha0sKami, Brett, Robert C, and Matthew K!

Thanks to Cathy Rinella for editing.

Hosted by Paul M. Sutter, astrophysicist and the one and only Agent to the Stars (http://www.pmsutter.com).