Spherical objects concentrated at an outcrop Opportunity reached last week differ in several ways from iron-rich spherules nicknamed "blueberries" the rover found at its landing site in early 2004 and at many other locations to date.
Opportunity is investigating an outcrop called Kirkwood in the Cape York segment of the western rim of Endeavour Crater. The spheres measure as much as one-eighth of an inch (3 millimeters) in diameter. The analysis is still preliminary, but it indicates that these spheres do not have the high iron content of Martian blueberries.
MORE: http://www.sciencedaily.com/releases/2012/09/120914154003.htm
See also...
First Planets Found Around Sun-Like Stars in a Cluster
http://www.sciencedaily.com/releases/2012/09/120914133446.htm
