Pollution on exoplanets, megastructures, and eavesdropping on radio signals are just a few of the ways humanity can confirm they aren’t alone in the cosmos. Marcy Huston and Jason Wright put their heads together and write out the hows and whys of these clues revealing the universe’s greatest secret — We are not alone. What that dynamic duo didn’t address is detecting downloads from the deep void, but it seems Macy Huston was saving that idea for collaboration with Nick Tusay. These Astronomers Search For Signal From “Interstellar Internet” Nodes may use gravitational lensing to boost data transfer speeds and reduce latency, and Kiona Smith explains why this is an exciting prospect. Sadly those Signals From An Extraterrestrial Civilization Could Be Older Than 90,000 Years which is especially poignant since Earth’s “dank memes” and celebrities from 2001 might as well be shards of ancient pottery bearing cuneiform jokes about cats. Avi Shporer gets down to brass tacks about how interstellar communication is more like sending a message in a bottle than sending a letter from NYC to LA via pony express. (CS)
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