The Himalayan Times 2014.01.22 21:09
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
ROCK, ROVER, MAR, MARTIAN, PINNACLE, NASA, Mars