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

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

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 ...

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

The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, with no ice covering the surface ...

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.

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

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 ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

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 ...

Six planets - Venus, Mars, Jupiter, Saturn, Uranus and Neptune - were spotted in the night skies over Italy in a planetary ...