A new search for extraterrestrial life aims to find out by listening for radio pulses from the center of our galaxy. Narrow-frequency pulses are naturally emitted by stars called pulsars, but they're also used deliberately by humans in technology such as radar. Because these pulses stand out against the background radio noise of space, they're an effective way of communicating across long distances — and an appealing target to listen for when searching for alien civilizations. The itinerary for the 21st century is to find evidence for technosignatures, biosignatures, and perhaps alien artifacts from space. Tonight on Ground Zero, Clyde Lewis talks with astronomy journalist, Dr. Sky about FIRST CONTACT - OVERLOOKED OR UNDERPLAYED. #GroundZero #ClydeLewis #Aliens #Space https://groundzeromedia.org/11-29-23-first-contact.../ Ground Zero with Clyde Lewis is live M-F from 7-10pm, pacific time, and streamed for free at https://groundzero.radio and talkstreamlive.com. For radio affiliates near you, go to talkmedianetwork.com. To leave a message, call our toll-free line at 866-536-7469. To listen by phone: 717-734-6922. To call the live show: 503-225-0860. For Android and Apple devices, download the updated and improved apps: https://play.google.com/store/apps/details... and https://apps.apple.com/us/app/aftermath-media/id1570944561. For additional show information, go to groundzeromedia.org. To access Ground Zero's exclusive digital library which includes webinars, archived shows/podcasts, research groups, videos, documents, and more, you need to sign up at aftermath.media. Subscriptions start at $7/month. Check out the yearly specials!