What are the best methods to explore Valles Marineris on Mars, which is the largest canyon in the solar system? This is what ...

Aganippe Fossa stretches about 375 miles across the surface of Mars, making it longer than the 277-mile-long Grand Canyon.

(CNN) -- Colossal canyons across Mars formed eons ago by massive floods of carbon dioxide and solid debris instead of liquid water, according to a controversial report this month. The theory ...

Mystery of where all the carbon dioxide went that once made the red planet far more hospitable has puzzled scientists for ...

Waterton Lakes National Park is full of surprises, but few Alberta spots are quite as vibrant as Red Rock Canyon.

It's a vast system of chasms five times longer and 10 times wider than the Grand Canyon, and scientists think it formed in a similar way. Billions of years ago, Mars was warmer, and covered with ...

UNLV geoscientist Arya Udry shares what motivates her in studying space, her work on the Mars Perseverance mission, and the world of knowledge a meteorite can bring.

Until now, NASA's landers mainly focused on exploring Mars' surface for signs of potential life. They've touched down near volcanoes, valleys, and canyons. But InSight won't be going anywhere like ...

A new model of canyon-forming floods from UMass Amherst and CalTech researchers suggests that deep canyons can be formed in bedrock by significantly less water than previously thought. Disclaimer ...