Astronomy

Notes: 6C - Defining Planets

  • Concepts
    • Classical Planets - Can be seen with the naked eye
    • Predicted Planets - Science finds Uranus & Neptune
    • Rules for Planets - 3 rules that define planets
      1. Orbits the Sun - No rogue planets
      2. Enough Mass - No lumpy objects need apply
      3. Cleared Orbit - Or collisions would happen
    • Dwarf Planets - Any non-planet object that is round
  • Summary Questions / Tasks
    • Explain why it is silly to include Pluto as a planet, be specific.