Scientists have offered new hope in the search for alien life by suggesting they could be communicating across the universe ...

"We're not saying, and we can't say, that there's no life in Europa. What we're saying is that it's a harder proposition, ...

Europa has long been the darling of the search for life beyond Earth. The reason is simple: beneath its cracked, icy shell ...

Titan looks hostile and alien. But it avoids some of the biggest problems that stop humans elsewhere. That is why scientists ...