NASA believes one icy moon may offer humanity's best chance of discovering alien life. Hidden beneath a frozen shell lies a ...

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

Things changed just a few years later, however. In November 1783, a hot-air balloon designed by the Montgolfier brothers ...

Discover this week's must-see night sky events, moon phases, and stunning astrophotos. Sign up for our skywatching newsletter ...

There’s dozens, maybe hundreds of movies where “America!” is the predominant theme—some reverent, some scathing, all of it ...

Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” – Arthur C.

Titan, Saturn's largest moon, is home to vast lakes and seas - not of water, but of liquid methane and ethane. In this video, ...

In 1947, pilot Kenneth Arnold's report of strange objects over Mount Rainier and a fateful media misquote created the 'flying ...

NASA's Swift Observatory is in peril. A last minute mission to save it could make spaceflight history. Here's everything to know.

The best Steven Spielberg movies include Disclosure Day, ET, Indiana Jones, Jaws, Schindler's List, Jurassic Park, The ...