aliens

A draft paper by a Harvard scientist and the head of the Pentagon's UFO office has raised the idea an alien mothership could be in the solar system, sending out tiny probes dubbed "dandelion seeds" to explore the planets within.

Scientists have proposed another use for the world's largest gravitational wave observatory: scanning for the ripples in space-time left in the wake of gargantuan alien spaceships.

All About Space magazine issue 137 explores glitches in the universe and how the laws of physics may have been reversed. Take at look at the latest issue here.

We're unprepared for when E.T. reaches out to us. A team of experts is determined to change that.

The U.S. government has officially started to explain some of the most infamous UFO encounters of the last decade, with China and weather balloons as top offenders.

Scientists who study exoplanets explain how the James Webb Space Telescope will study exoplanet atmospheres.

Space.com reached out to UFO groups and leading experts in the field to get their thoughts on NASA's new endeavor.

We should be intrigued, but not too excited (yet). Any interesting signal has to go through a lot of tests to check whether it truly carries the signature of extraterrestrial technology.

The internet is abuzz with rumors that China may have picked up signals from an alien civilization. But the pings are probably just Earthly interference, experts say.