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

Thousands of mysterious mounds on Mars preserve layers of evidence pointing to ancient water on the red planet that likely ...

Data collected by NASA's InSight lander suggest that ancient internal processes are responsible for the "Martian dichotomy" ...

In his prepared remarks, Trump, a longtime backer of U.S.-led space exploration and exploitation, singled out Mars and left ...

The findings are the result of the ongoing studies performed by NASA’s Curiosity rover, which has been scouring the red ...

Research suggests that an ancient shoreline helped to sculpt the drop between Mars' southern and northern hemispheres.

The Red Planet will be at its closest point to Earth, also known as perigee, on Jan. 12 and will be exactly opposite the sun ...

The Red Planet reaches its best position all year this week on January 15. Here’s how and when to get out and see it.

President Donald Trump made a bold promise to America minutes after taking the Oath of Office: pledging that an American flag ...

Planets with suns like Wolf 359 are subject to huge blasts of radiation that raise questions about their long-term ...

It’s a term used by astronomers to describe when Earth, Mars and the Sun align. When this happens, Earth sits directly ...

Mars is known as the 'Red Planet.' Learn about its reddish hue, caused by iron oxide, its position as the fourth planet from ...