YAHOO.COM - NASA's Mars rover Curiosity has photographed a shiny, metallic-looking
object that bears a passing resemblance to a door handle or a hood
ornament.
The Curiosity rover
has not stumbled onto evidence of an ancient civilization that took the
family van to Olympus Mons for vacation, however. The object is simply a
rock that the wind has sculpted into an interesting shape, scientists
said.
"The shiny surface suggests that this rock has a fine grain and is
relatively hard," Curiosity scientists wrote Monday (Feb. 11) in an
explainer blurb accompanying the image, which was taken on Jan. 30.
"Hard, fine-grained rocks can be polished by the wind to form very
smooth surfaces."
Similar "ventifacted" (wind-eroded) rocks can be found here on Earth,
notably on the dry, gusty plains of Antarctica, they added.
The newfound rock is not the first shiny object Curiosity has photographed on the Red Planet.
In October, the car-size rover paused its first soil-scooping
activities to investigate a bright sliver lying on the ground nearby.
Scientists think the scrap is a piece of plastic debris that shook loose
during the robot's dramatic sky-crane landing on the night of Aug. 5.
Later in October, Curiosity spotted bright flecks in one of the holes
it dug out while scooping. That material appears to be some sort of
native Martian mineral, as does the so-called "Mars flower," which garnered a lot of attention after Curiosity photographed it in December.
While such finds may be interesting to laypeople and researchers
alike, Curiosity has bigger fish to fry. The rover's main task is to
determine whether its landing site — a huge crater called Gale — could
ever have supported microbial life.
Curiosity carries 10 different scientific instruments and 17 cameras to
aid in this quest, along with other tools such as a rock-boring drill. Curiosity used this drill
to collect samples for the first time over the weekend, boring 2.5
inches (6.4 centimeters) into a Red Planet rock in a move that had never
been done before on another planet.
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