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Posted 05 December 2013 - 08:02 PM
Laser Instrument on NASA Mars Rover Tops 100,000 Zaps
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. The Chemistry and Camera instrument (ChemCam) uses the infrared laser to excite material in a pinhead-size spot on the target into a glowing, ionized gas, called plasma. ChemCam observes that spark with the telescope and analyzes the spectrum of light to identify elements in the target.
"Space is big. Really big. You just won't believe how vastly, hugely, mind-boggingly big it is. I mean, you may think it's a long way down the street to the chemist, but that's just peanuts to space." - The Hitch-Hikers Guide to the Galaxy - Douglas Adams 1952 - 2001