Furthermore, the findings bolster the theory that the moon formed when a giant, Mars -size protoplanet slammed into the young ...

Some of the unusual rocks carry stories about water on Mars. One has hints of long-gone microbes. All tell of a dynamic, complex planet.

A strange rock covered in tiny spheres may hold secrets to Mars’ watery — or fiery — past.

Flagstaff is an excellent base for travelers to Northern Arizona, located east of Grand Canyon National Park. National park ...

As a top destination for the entire U.S., the Grand Canyon is also one of the top U.S. national parks to visit. The South Rim ...

Nighthawk would fly to altitudes of up to 4,920 feet (1,500 meters) above the Martian average, covering distances of up to ...

The Perseverance rover has found some intriguing samples on the red planet. Here's what they might reveal about the origins ...

Io is an incredibly active and extreme place, with glistening lava lakes and volcanic eruptions shooting sulfur and magma to ...

A recent experiment has shown that certain lichen species can remain metabolically active in an environment similar to that found on Mars.