An arrowhead-shaped rock on Mars sporting features that may hint at ancient microbial activity on the Red Planet has left ...

The most significant change since those 1970's experiments were conducted was the discovery of high levels of perchlorate on Mars. Perchlorate, plus abiotic oxidants, explains the Viking results and ...

The study, led by Adomas Valantinas of Brown University and published in Nature Communications, has confirmed the real reason ...

Study coauthor Michael Manga, a professor of Earth and planetary science at the University of California, Berkeley, and his ...

The fundamental question of why Mars is red has been considered for hundreds if not for thousands of years,” Adam Valantinas, ...

A Chinese rover found evidence of ancient beaches on Mars, suggesting the planet once had vast oceans 4 billion years ago. The discovery of sloping sand layers beneath the surface provides new ...

Martian dust is mostly rust. Mars’s famed color has captivated humankind for centuries, earning its nickname of the ‘Red Planet’. Romans named Mars for their god of war because its colour was ...

The Red Planet, as it’s often called, has a distinct hue, and a new theory about this coloration could have implications for our understanding of Mars' evolution.

Further analysis also indicated these foreshore deposits on Mars weren’t the result of river flows, volcanic activity, or wind—leaving oceanic coasts the most likely explanation. If true ...

Now, Mars. Photographs from the NASA Archive, a stunning new release from publisher Taschen, invites us on an extraordinary ...

An erupting Hawaii volcano once again began shooting fountains of lava that reached hundreds of feet high on Tuesday.