Basic Concepts

• The Milky Way
• Galaxies
• Star Clusters
• Nebulae
• Deep Sky Objects
• Variable Stars, Novae, and Supernovae
• Double, Multiple, and Binary Stars
• How Stars Die
• Star Formation and Evolution
• Properties of the Stars
• Orbital Mechanics
• Star Names and Catalogs
• Solar and Lunar Eclipses
• Motion of the Planets
• Phases and Tides of the Moon
• The Seasons
• Precession of the Equinoxes
• Date and Time
• Astronomical Coordinates
• Basic Concepts