How Would Alien Astronomers Go About Discovering Life On Earth
Astronomers (the human kind) have found 1,715 stars within 326 light years of Earth where astronomers (the alien kind) would have been able to detect life on Earth during the last 5,000 years. “One might imagine that there are worlds beyond Earth that have already detected us and are wondering if they are alone in the Cosmos. This catalog is an intriguing thought experiment for which one of our neighbors might be able to find and study Earth,” Jackie Faherty, a senior scientist at the Department of Astrophysics at the American Museum of Natural History, describes....