"Rootless cones form when lava flows over wet or icy ground, causing it to boil and explode," said Dundas. "The region around ...

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

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

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

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 ...

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

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

Stargazers who haven't had a chance to check out this month's planet parade will want to look up soon because there's ...

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century is now taking place. Here's how to see it.

The alignment of Venus, Mars, Jupiter, Saturn, Neptune, and Uranus is a visual feast for astronomy enthusiasts. As NASA notes ...

An exploding budget and an unraveling schedule spell disappointment for NASA's mission to learn more about Mars's history.