Curiosity was sent to the Red Planet to search for life. Until researchers on Earth tweaked its innards and made it detect whiskers of Martian gravity.
By ROBIN ANDREWS
"While one Martian rover, Opportunity, has died, its younger cousin Curiosity has just solved a mystery. It measured tiny changes in the Red Planet’s gravity, allowing its mission team back home at NASA to understand how a huge, 3.4-mile high mountain the rover is exploring, had formed. ... "
