
January 25, 2008
Sarah Davis (left) explains to fellow classmates, Noel Struening
and Marcus Villarreal, the different types of light sources in her
experiment concerning light pollution in the night sky.

January 25, 2008
Sarah Davis (left) explains to fellow classmates, Noel Struening
and Marcus Villarreal, the different types of light sources in her
experiment concerning light pollution in the night sky.
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