Aliens have long been a staple of science fiction. Yet the possibility of intelligent life beyond Earth is more than a matter of imagination—it is also a subject of serious scientific inquiry.

Thirty years after the first exoplanet was found in 1995, NASA's counter of confirmed worlds outside our Solar System crossed ...

Since 1975, Nikon's Small World competition has featured images of strikingly surreal, alien beauty. Here are this year's ...

Could our earliest radio broadcasts have been heard by alien worlds? Researchers suggest the waves have travelled over 100 ...

NASA has confirmed 6,000 exoplanets, marking a major milestone in humanity’s quest to understand other worlds. From gas giants hugging their stars to planets covered in lava or clouds of gemstones, ...

For example, Hinduism, Buddhism, Jainism, and other religions that originate in the Global East "have always conceived of the universe as vast, as going through many cycles of existence," says Jeffery ...