Interstellar space is unforgivingly vast, but the emptiness has some advantages. The lack of atmosphere means there is no aerodynamic drag.

Small, rocky planets can coalesce around a wide variety of stars, suggesting that Earth-like alien worlds may have formed early and often throughout our Milky Way galaxy's history, a new study reveals ...

The buzz about aliens began in the summer of 1947. The US army sightings of “flying saucers” fuelled widespread speculations about visiting aliens, urging the US to launch its first highly classified ...

On May 22, 2026, the Pentagon released a second batch of previously classified photos and videos showing what appear to be ...

NASA's Nancy Grace Roman Space Telescope is poised to make a major leap in the hunt for worlds outside our solar system, ...

If advanced aliens lived on a planet within a few hundred to a thousand light years away from Earth, then vast numbers of their signals must already have crossed Earth without being noticed, a new ...

There are few ideas in science that capture the imagination quite like the search for extraterrestrial life. From Mars ...