• The Cosmic Perspective (course book)
• The Galaxy Song by Monty Python
• An Ancient Universe: How astronomers know the vast scale of cosmic time
• Night and day views of Earth
• NASA eclipse page
• Solar System Simulator
• The Nine Planets
• Eclipses in history: from fear to fascination
• How the Earth's surface changes through plate tectonics and continental drift
• Asteroid and Comet Impact Hazards
• Interview with Sol (humorous spoof about the Sun)
• Planet doppler shift simulation
• Extrasolar planets (research)
• Extrasolar planets (artwork)
• Galaxy crash Javalab
• General Relativity
• Ned Smith's FAQ about cosmology
• New York Times (Tuesday Science section)
• Sky and Telescope Magazine
• Astronomy Magazine
• The Hubble Space Telescope
• NASA Home Page
• Jet Propulsion Laboratory
• The Apollo Missions to the Moon
• Bad Astronomy
• God, Evolution, and the Big Bang
• Careers in Astronomy

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