Do you feel like you’re under surveillance? It’s not just Big Brother – astronomers have identified over 1,700 nearby stars close enough for alien civilizations to have seen Earth pass in front of the Sun at some point over the last 5,000 years. Even more disconcerting, 46 of them are in the right place to pick up our radio and TV signals, and over half have potentially habitable stars. Is Big ET watching us too? “Among these stars are seven known exoplanet hosts, including Ross-128, which saw Earth transit the Sun in the past, and Teegarden’s Star and Trappist-1, which will start to see it in 29 and 1,642 years, respectively. We found that human-made radio waves have already swept over 75 of the closest stars on our list.”