President Donald Trump criticized Barack Obama for his comments on aliens. Then, he said we should release more files. Joe Biden signed disclosure bill.

NASA’s Mars Curiosity rover has been exploring a curious geological formation made up of ridges up to six feet in height for the last six months.

New photos captured by NASA's Curiosity rover show that Mars' giant, spiderweb-like "boxwork" features are covered in tiny, never-before-seen nodules that bear a striking resemblance to arachnid ...

Craters, craters, and yet more craters: this snapshot from ESA's Mars Express is packed full of them, each as fascinating as ...

Find out which sci-fi shows are the best for rewatches based on their compelling narratives and character development, from Doctor Who to Dark.