Charles Messier

StarDate 7/25/2014: Logging Star Clusters In Sagittarius One of the first items on almost any amateur astronomer’s “to-do” list is completing the Messier marathon — looking at all 110 objects cataloged by Charles Messier. Messier himself began the first marathon 250 years ago.

More From CBS San Francisco

Music's Biggest Night
Your Bay Area Guide To Valentine's Day

Listen Live