Earth's deserts feature surreal landscapes, from Mars-like red dunes to extensive salt flats, creating an otherworldly experience that resembles stepping onto an alien planet. Egypt's White Desert ...

German astronaut Alexander Gerst tweeted this photo from the space station on Sept. 19, writing "This is why deserts are called the history book of our planet. This one is in southern Africa." ...

HD 20794 D is located within the so-called "Goldilocks zone", where temperatures would support the presence of liquid water, a prerequisite for life. "Having a planet in the habitable zone is not ...