AST101: Celestial Clockworks

Topical Links

• A Walk through Time (history of timekeeping)
• Nat'l Inst Standards Time and Frequency Division 
• U.S. Naval Obs. Sunrise-set, Moonrise-set Calculator
• Smithsonian FAQs: Foucault Pendulum
• Precession of the Earth's Axis

Observing Links

• SkyWatchers Diary
•  Satellite Viewing Schedules
• Space Weather (auroras, sunspots, etc.)
•  Weather forecast
•  Int'l Dark-Sky Association
• Urban Legends Ref. pages
•  Sky Publishing, Inc.

Updated Sept. 7, 2001