AST101: Celestial Clockworks

Topical Links

• Celestial Sphere

• A Walk through Time (history of timekeeping)
• Nat'l Inst Standards Time and Frequency Division
• Precession of the Earth's Axis

Observing Links

• SkyWatchers Diary
• Satellite Viewing Schedules
• Space Weather (auroras, sunspots, etc.)
• Weather forecast
• U.S. Naval Obs. Sunrise-set, Moonrise-set Calculator
• Int'l Dark-Sky Association
• Urban Legends Ref. pages
• Sky Publishing, Inc. (Sky and Telescope).

Updated Sept. 10, 2002
Report broken links to dbatch@msu.edu