NASA's Mars rover Curiosity faces ongoing wheel wear and tear as it continues its trek across the rock-strewn Red Planet. Mission engineers are watching the wheels turn, keeping an eye on the dings and cracks that have begun to appear.
NASA's Mars rover Curiosity faces ongoing wheel wear and tear as it continues its trek across the rock-strewn Red Planet. Mission engineers are watching the wheels turn, keeping an eye on the dings and cracks that have begun to appear.