Artificial intelligence (AI) is continuing to have a disruptive impact on ever more parts of humanity. But what does it mean in the long run? A new paper, available as a preprint on arXiv from ...

A striking optical illusion resembling a floating city or alien spacecraft was captured on camera above the countryside in ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life. The problem is not finding the star.

Jordan Flowers claims Russia and China may be reverse-engineering alien technology, raising national security concerns.

In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...

In 1988, the Soviet Union launched two of its most ambitious spacecraft ever built not toward Mars itself, but toward one of ...

A Falcon 9 rocket topped with the 15,400-pound (7,000 kilograms) SXM-11 spacecraft is scheduled to lift off from Cape ...