Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

Suppose an alien civilization discovers Earth and decides to investigate. Before it chooses a landing site or considers how ...

Partly cloudy, light-years away.

Earthbound turns a lonely man’s alien origin story into a funny, heartbreaking sci-fi romance. Is he stranded on Earth, or ...

Is alien life really out there? For decades, humanity has looked at the night sky and asked the same question. Now, according ...

Pioneering computer scientist on why Trump is using ‘superintelligence’ wrong, whether AI could wipe out humanity – and how our biggest challenge will be accepting we’re not the only intelligent being ...

When I was a child, I thought aliens communicated via telepathy.Of course, I must have learned that from someone. Whether it ...

From The Fifth Season to Gideon the Ninth, these science fantasy novels blend magic, technology, and unforgettable worlds.

Revisit five bizarre 1980s sci-fi movies filled with space vampires, futuristic vehicles, alien adventures, and cult-movie ...

Scientists believe there are planets outside our solar system where life is even more abundant and sustainable.

This 1988 sci-fi movie blended aliens, crime, and buddy-cop action before becoming a TV series and expanding into a ...

A SpaceX Falcon 9 launch produced a glowing, jellyfish-shaped plume over the US. Here's what causes the phenomenon and ...