We Should Message Extraterrestrial Civilizations, Not Just Listen for Them (?)

In a press release dated Wednesday, October 23, 2019, Breakthrough Listen announced its collaboration with NASA and the space agency’s Transiting Exoplanet Survey Satellite (TESS). TESS is expected to add thousands more to the thousands of exoplanets already discovered. The collaboration means that Breakthrough Listen will now have specific directions in which to listen and look both for extraterrestrial signals, signs of intelligent life and technosignatures—signs of advanced technology.