On September 27, 2012, the rover Curiosity (Mars Science Laboratory) snapped and sent back images of Martian bedrock possibly once home to a fast-moving stream. Curiosity founded rounded pebbles, probably due to erosion by water. The rocks ranging in size from sand grains to golf balls could not have been carried into the Gale Crater by wind, but carried water for a 20 to 25 miles and smoothed out. At one point in the past lasting thousands to millions of years, Mars may have been overflowing with liquid water, but present-day Mars is a barren desert with nothing but remnants of rock carved by water. Curiosity made this remarkable discovery when driving to Glenelg, the point where three types of terrain meet. Finding water is only the first step to discovering a once-habitable environment for microbial life. However, the dried-up stream didn’t preserve organic carbon. Carbon is necessary for life, so Curiosity will head to the foothills of Mount Sharp to find organic materials. Instead of “following the water,” scientists will now “follow the carbon.”
” Curiosity finds signs of ancient stream on Mars.” FOX News. Fox News, 27 Sep 2012. Web. 27 Sep 2012.
Kaufman, Mark. “Curiosity rover’s Mars landing site was once covered with fast-moving water, NASA says.” The Washington Post. The Washington Post, 27 Sep 2012. Web. 27 Sep 2012.