Buttes and mesas in Mars' Chryse Planitia contain clay minerals made from liquid water interacting with the rock nearly 4 ...

Thousands of mysterious clay mounds found on Mars were formed by ancient water on the Red Planet's barren northern plains, ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Exciting February sky events include Venus at its brightest and closest to Earth, the moon occulting the Pleiades, and a parade of planets in the post-sunset sky.

Earth is home to some truly bizarre and breathtaking landscapes — here are 20 that look straight out of an alien world.

The Mars Express orbiter launched to the Red Planet. Twenty years later, ESA has delivered a high resolution color image of Mars along with a time-lapse of "webcam" images that were released in near ...

Though it's a cold, dead planet, Mars still has its own natural beauty about it. This image shows us something we'll never ...

One lucky East Lancashire stargazer caught a glimpse of the rare celestial phenomenon - the planetary alignment.

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic ...

Giant 'kidney beans' spotted in Mars satellite images could point to signs of water and life Not knowing Mars' REB has also prevented researchers from gaining a better understanding of the planet's ...

Six planets - Venus, Mars, Jupiter, Saturn ... A composite image made using real telescope images captured during the planet parade.(X/Andrew Mccarthy) Though such alignments aren't unheard ...

Beautiful photos of the six planets aligned in the night sky have emerged online. Mars, Jupiter, Uranus, Neptune, Venus and Saturn are all currently lined up in a row and will be visible in the night ...