Astrophysicist Lisa Kaltenegger surveys the galaxy in her new book 'Alien Earths'. We 'might not even recognize' alien life, she says, when it's 'staring us in the face'. READ MORE: One 'morbid' theory may explain Read this story
Astrophysicist Lisa Kaltenegger surveys the galaxy in her new book 'Alien Earths'. We 'might not even recognize' alien life, she says, when it's 'staring us in the face'. READ MORE: One 'morbid' theory may explain Read this story
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