A fun-filled, highly illustrated, science-based exploration into one of the universe’s greatest mysteries—does life exist beyond Earth?—from bestselling and award-winning author Stacy McAnulty.   Spoiler: Scientists haven’t discovered life beyond Earth, not even a single teeny-tiny organism. But there’s a whole lot of outer space, and humans have searched only a fraction of a fraction of it. So do you believe in the possibility of life out there? Or do you think Earth is per