Are we alone in the universe? Is Earth the only planet thats a suitable homefor life? These questions have long motivated scientists as central issues inastrobi... » 

Are we alone in the universe? Is Earth the only planet thats a suitable homefor life? These questions have long motivated scientists as central issues inastrobiology the search for life in the universe. Astrobiologists compare lifeon Earth to signs of life on other planets. They test meteorites for evidenceof alien bacteria. They collect soil and atmospheric samples from otherplanets. They study photographs taken on space missions. And they listen forsignals from alien civilizations on enormous radio dishes. Learn all aboutastrobiologists amazing research in this fastpaced peek into the future ofscience. «