Keiron Smith
Basic Concepts
Welcome to the Basic Concepts section. Here you'll find fundamental astronomical knowledge to help you understand the night sky.
Topics
- Astronomical Coordinates
- Precession of the Equinoxes
- Date and Time
- The Seasons
- Phases and Tides of the Moon
- Solar and Lunar Eclipses
- Motion of the Planets
- Orbital Mechanics
- Star Names and Catalogs
- Properties of the Stars
- Star Formation and Evolution
- How Stars Die
- Double, Multiple, and Binary Stars
- Variable Stars, Novae, and Supernovae
- Deep Sky Objects
- Star Clusters
- Nebulae
- The Milky Way
- Galaxies
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