So far, the answer is no. Scientists have not verified an alien organism, spacecraft, manufactured extraterrestrial object or biological sample on Earth. NASA says it has found no credible evidence of ...

Physicist Brian Cox explores where scientists might discover extraterrestrial life, focusing on Mars, Jupiter's moon Europa, ...

Gone are the days when the search for life beyond Earth was confined to science fiction movies or spirited debates. Now, thanks to dramatic advances in astronomy, biology, chemistry, and geology, ...

It's a dizzyingly busy time for scientists searching for life on distant planets. To date, astronomers have cataloged more than 6,000 planets beyond our solar system and are searching the atmospheres ...

What if life on Earth began in outer space? Millions of people accept the theory that intelligent life forms visited Earth thousands of years ago and were worshipped as gods by primitive man. Are ...