Elon Musk has turned a long-running joke about being an extraterrestrial into a central part of his public persona, even as he argues that humanity may be the only intelligent life in the universe.

AMSTERDAM (Reuters) - Nearly half of humans believe in alien life and want to make contact, a survey in 24 countries has found, in what researchers said helps to explain the lasting popularity of the ...

Whether alien life exists in the universe may be one of science's most important questions. Now, a leading British scientist ...

Humans have created countless inventions that shape our lives in amazing ways. Some are practical, some are revolutionary, and some are simply fascinating. But if aliens suddenly appeared, which ...