Stretching over 2,500 miles long and seven miles deep, Valles Marineris is the largest canyon in the solar system — and NASA’s HiRISE camera just spotted something new inside it. High-resolution images show collapsed cliffs,

A thermal camera built at Arizona State University is on its way take readings on Europa, one of Jupiter's moons. To test the camera and its readings, the NASA mission detoured to Mars, relying on the extensive data collected from the red planet over the ...