Recorded live 13 July 2023. Hosted by Dr. Franck Marchis. If an alien civilization wanted to communicate with other civilizations throughout the Milky Way, the galaxy’s core holds potential as a strategic site for a beacon. Until now, radio SETI has primarily dedicated its efforts to the search for continuous signals. A new study sheds light on the remarkable energy efficiency of a train of pulses as a means of interstellar communication across vast distances. This marks the first-ever comprehensive endeavor to conduct in-depth searches for these signals. Join us in discussion with Dr. Vishal Gajjar, a SETI Institute astronomer working at the Allen Telescope Array. Paper: https://iopscience.iop.org/article/10.3847/1538-3881/acccf0   We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.  Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too!  Every bit helps! Thank you! ------------------------------------ Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! http://cosmoquest.org/Donate This show is made possible through your donations.  Thank you! (Haven't donated? It's not too late! Just click!) ------------------------------------ The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.