Beam Checks Chemical Elements In Rocks And Soils
NASA's Curiosity Mars rover has passed the milestone of 100,000 shots fired by its laser. It uses the laser as one way to check which chemical elements are in rocks and soils. The 100,000th shot was one of a series of 300 to investigate 10 locations on a rock called "Ithaca" in late October, at a distance of 13 feet, 3 inches (4.04 meters) from the laser and telescope on rover's mast.