Some of the smartest people on the planet — Nobel Prize winners, theoretical physicists, Silicon Valley billionaires — ...

I have seen the lofty walls of Babylon and the Zeus statue by the Alpheios River. The Hanging Gardens and the colossus of the ...

3I/ATLAS, a mysterious interstellar object racing toward the Sun, is baffling scientists with its speed and origin. Some researchers suggest it could even be alien-made, drawing comparisons to probes ...

A top U.S. Air Force general linked to the military's alleged research on UFOs has gone missing – and experts are calling his mysterious disappearance a "grave national security crisis," ...

Melissa Quinn is a senior reporter for CBSNews.com, where she covers U.S. politics, with a focus on the Supreme Court and federal courts. Washington — A federal appeals court on Tuesday ordered an end ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically different from anything known to have ever formed around our sun ...

From the first photographer star to the discovery of alien worlds, these night sky targets mark some of astronomy's greatest ...

Many people like to look up at the night sky, admire the stars, and wonder if humans are alone in the galaxy or universe. Sure, many like to imagine that they're not, as demonstrated by the countless ...

The Pentagon on Friday released a first group of previously secret files documenting reports of UFOs - a move sought for ...

Just over 40 years ago, in his novel Contact, astronomer Carl Sagan imagined what it would be like to detect radio signals beamed from other intelligent lifeforms in the galaxy. In the story, these ...

A research team has developed a new approach to detecting life beyond Earth that does not rely on identifying specific biological markers. Instead, the study suggests that life may be detectable ...