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Good morning fellow students. I am going to share with you about what I have learned at Goddard so far. I will send you some stories that explain how the scientists at NASA tell their stories. For the younger student K-4, "Wavetown" is an interactive learning place that teaches about wavelenght.  The web site for this is http://science.hg.nasa.gov/kids/imagers/ems/ and earthobservatory.nasa.gov can be used with google earth, the NEO section here you get images as old as 5minutes that you can study changes in the entire world. I hope this helps!