New evidence of ancient rivers suggests Mars may have been a "blue planet," thanks to an ocean spanning its entire northern ...

See the 2,500 mile-long (4000 km) Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: ...

Mars is absolutely dripping with evidence that the red planet was once a striking blue, complete with glistening lakes, ...

"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

Mars today is a frozen, dusty desert. But if you look deep inside Valles Marineris, the largest canyon system on Mars and in ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Stretching 18 miles wide and averaging 4,000 feet deep, the Grand ...

One of the largest canyons in our Solar System carved its way through several layers of ancient volcanic eruption debris, a recent study reports. Valles Marineris is a titanic network of deep cracks ...

Labroots has rich history of examining Mars in great detail, including its suite of awesome geologic formations, stunning orbiter images, two moons, geologic and observational history, and potential ...

It's nearly 10 times as long as the Grand Canyon, and three times as deep. But how did it form? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.