Writing Assignment #2

     In Kenneth Chang's article "NASA Grabs a Second Look at a Comet," he describes how the Stardust spacecraft passed by the comet Tempeli. This was the first time that a comet had been seen close up twice. Scientists wanted to see how parts of Tempeli's surface had changed, by deep impact, since 2005. Scientists had to precisely track the comet's rotation and navigate the spacecraft to ensure that the desired parts of Tempeli would be facing Stardust as it passed. The Stardust spacecraft passed by the comet at 24,000 mph and it also passed 110 miles from the comet Tempeli.


Chang, Kenneth. "NASA Grabs a Second Look at a Comet." New York Times. 15 Feb. 2011. Web.
      <http://www.nytimes.com/2011/02/16/science/space/16comet.html?r=1&ref=space>