In recent years, we have proof: there are alien worlds where ideal conditions for the emergence of life exist. Thanks to the insights of modern astrophysics, the likelihood of discovering this life somewhere out there increases daily. Florian Freistetter describes how modern astronomy had to learn to see the invisible in order to find super-Earths and hot Jupiters. He explains what these alien worlds must be like for life to have developed on them—and how, with the help of new telescopes, we will soon find out what extraterrestrials really look like. "The Rediscovery of the Sky" is the chronicle of one of humanity's greatest adventures: the search for an answer to the question, "Are we alone in the universe?".