Views From Earth - 1

• 8A30.10 - The Horizon - Estimating the Distance to the Horizon
• 8A30.30 - Retrograde Motion of Inner Planets Demo
• 8A30.32 - Retrograde Motion
• 8A30.45 - Distortion due to Refraction
• 8A30.50 - Synodic Period
• 8A30.70 - Parallax
• 8A30.80 - Auto-resonance
• 8A30.90 - Roche Limit