by Hannah Harris
Posted 8/07/19, 01:22 pm
NASA’s Curiosity rover is exploring a mountain on Mars where streams might once have flowed into bubbling lakes. The rover recently drilled rock samples that contained clay minerals formed from water mixed with sediment. As of Tuesday, the $2.5 billion robot has roved the Red Planet for seven years, traveling 13 miles and ascending 1,207 feet up the Martian terrain. Curiosity got its name from 11-year-old Clara Ma, who in 2009 won a nationwide naming contest.