(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 ...

A proposed Mars helicopter mission would search for signs of life, water and future human footholds in a vast volcanic canyon network.

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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.

Trump has signed just five bills into law - while issuing 124 executive orders. Here is why that matters The net worth it takes at every age to be richer than most people you know Courier firm DHL ...

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 ...

It contains dune fields, ancient lava flows, giant boulders, and even deeper canyons. In other words, it's not somewhere a ...

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 ...