Mystery white rock near NASA Mars rover (11)

The Himalayan Times 2014.01.22 21:09
REUTERS CAPE CANAVERAL: Scientists are stumped as to how a rock mysteriously appeared in images taken two weeks apart by NASA's Mars rover Opportunity. The rover, which landed in an area known as Meridiani Planum a decade ago, is exploring the rim of a crater for signs of past water. Another rover, Curiosity, touched down on the opposite side of the planet in 2012 for a more ambitious mission to look for past habitable environments.
ROCK, ROVER, MAR, MARTIAN, PINNACLE, NASA, Mars