Why scientists believe Venus could host alien microbial life.

Long before the hunt began to find Earth lookalikes around other stars, one planet in the solar system had already been named Earth's twin. With its similar size and mass, Venus measures very close to ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” who look suspiciously like us in rubber suits. The scientists who actually ...