Are alien civilizations really possible? If extraterrestrials exist, where are they? How likely is it that somewhere in the universe an Earth-like planet suppor

THE FIRST IN AN ALL NEW, OFFICIAL TRILOGY SET IN THE ALIEN UNIVERSE! Featuring the iconic Ellen Ripley in a terrifying new adventure that bridges the gap betwee

Scientists are scanning the skies for extraterrestrial life. The most sophisticated search takes place at California's SETI Institute. This book explains their

In a 1950 conversation at Los Alamos, four world-class scientists generally agreed, given the size of the Universe, that advanced extraterrestrial civilizations

Named to the 2020 Hal Clement list and the 2020 ALA Rainbow List An original young adult novel of the Alien universe Olivia and her twin sister Viola have been