‘Barnacle Bill’ Surprises NASA Geology Team (315)
PASADENA, Calif. — “Barnacle Bill,” the first rock to undergo chemical analysis from NASA’s Mars Pathfinder Mission, may have been formed by a volcano, a University of Tennessee geologist said Tuesday. Dr. Hap McSween told reporters at a news conference at NASA’s Jet Propulsion Lab here that the rock seems similar to Earth rocks known