Starting the Spring Semester of 2012, the main Astronomy 104 webpage will be
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is just a placeholder page for people searching for the course online.
Astronomy Picture of the Day: NGC 3239 and SN 2012A
January 27, 2012
NGC 3239 and SN 2012A About 40,000 light-years across, pretty, irregular galaxy NGC 3239 lies near the center of this lovely field of galaxies in the galaxy rich constellation Leo. At a distance of only 25 million light-years it dominates...