Every single place? Wow:
The Exotica Catalog was put together by researchers from Breakthrough Listen, a decade-long program seeking to find signs of intelligent life in the universe. It ambitiously includes “one of everything” in astronomy. Incredibly, the catalog lists over 700 distinct targets, ranging from asteroids, comets, and planets through to pulsars, galaxies, nebulae, and star clusters. The point of the catalog is to “expand the diversity of targets surveyed in the Search for Extraterrestrial Intelligence (SETI),” according to the team’s paper, but the compendium could be leveraged for other purposes.
“In the future, it might also benefit students or members of the public who are trying to get a big-picture overview of astronomy or are trying to decide what to study,” Brian Lacki, a Breakthrough Listen researcher from the Department of Astronomy at the University of California Berkeley and first author of the paper, wrote in an email to Gizmodo. “Some of the objects on the lists were things I didn’t learn about until grad school or later, or even until we were compiling the catalog.”George Dvorsky, “Scientists Made a List of Every Place Aliens Could Be Hiding” at Gizmodo
In that case, they can’t be smarter than us.
Paper. (open access)