The Pentagon on Friday began releasing “never-before-seen” files relating to unidentified anomalous phenomena — previously ...

A mysterious comet from beyond our solar system is giving astronomers a rare glimpse into alien worlds — and it may have ...

Alien: Earth's Emmy-winning composer Jeff Russo said he used an Aztec death whistle to help create the music for the series' ...

Why so many Americans want to believe that extraterrestrials exist—and that the government is hiding the truth ...

Over the last decade, since the work of a shadowy government program called the Advanced Aerospace Threat Identification ...

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 ...

Kelp, a kind of seaweed, can be used in biofuels that one day could power ships and aircraft. That would sharply reduce the use of gas and oil, which emit greenhouse gases that lead to global warming.

There may be an ultraheavy explanation for the mystery surrounding the origins of the highest-energy particles ever observed.