(Don Pettit/X) A grotesque purple lifeform was photographed sprouting 'tentacles' on the International Space Station (ISS), ...

Finding life beyond our solar system goes beyond measuring an exoplanet's size, as rocky, Earth-sized worlds might not have ...

These are the 10 best sci-fi movies from the 1970s that hold up just as well today as they did five decades ago.

A photograph taken by a NASA astronaut has sparked fears it shows an extraterrestrial creature, but it’s just a photo of a potato.

Temperature plays the biggest role in where plants can grow. Warmer conditions allow more plants to survive in new places. Other factors like rainfall and soil also matter, but temperature has the ...

NASA plans a 2028 nuclear-powered Mars mission using SR-1 Freedom and Skyfall helicopters, aiming to transform deep-space ...