Space & astronomy

Solar system · gravity · orbits · cosmic scale

Lessons: 9

• Unit 1 · Our cosmic neighbourhood
  • The eight planets
  • Gravity and orbits
  • Kepler’s laws: the rules of orbits
  • Light-years: how big is space?
• Unit 2 · Earth, Moon & stars
  • Phases of the Moon
  • Why we have seasons
  • The life of a star
  • Light-years and cosmic distances
  • Artificial satellites

All learning tracks