From still lakes to shifting shores, waves play a bigger role than we think—even on worlds we’ve never directly observed.

The Department of War just dumped a huge batch of UFO files, but does it have proof of aliens? Here's what we make of it.

Earth is dotted with humongous, human-made structures that, to an alien eye, may be tell-tale signs of intelligent goings-on.

Debris dangles from a damaged apartment building on Mosfilmovskaya street after a Ukrainian drone attack in Moscow, Monday, ...

We have no idea what kind of life may exist on other planets, so it’s hard to know what to look for. Proxima Kósmos imagines a very different kind of solar system that could harbor life-forms we haven ...

A stunning view of New York City showcases the iconic Empire State Building rising above a dense cluster of skyscrapers ...

NASA's Curiosity rover uncovered critical new samples, including a series of compounds planetary scientists consider building blocks for the origin of life on Earth ...

Drone-mounted radar flown over glaciers on Earth show how the technology can map buried ice in detail, helping future Mars ...

The US government has released a declassified video of a star-shaped object filmed over the Middle East in 2013, and it ...

The Fantastic Four have some important allies over the years, and many of them were never part of the core team.

Multiple scientists linked to UFO research, nuclear labs and NASA's Jet Propulsion Laboratory have mysteriously vanished or died in recent years.