INTRODUCTION TO SPACE PHYSICS

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Across
  1. 2. An object that orbits a planet.
  2. 5. A rocky object orbiting the Sun.
  3. 6. A hot glowing ball of gas that produces its own light.
  4. 9. A large group of stars, gas and dust.
  5. 11. Oval-shaped path of a planet.
  6. 13. A meteor that reaches Earth’s surface.
  7. 14. A space rock burning in Earth’s atmosphere.
  8. 15. Theory explaining the origin and expansion of the universe.
  9. 17. Natural objects found in space.
Down
  1. 1. A body that orbits a star.
  2. 3. A person trained to travel and work in space.
  3. 4. All space and everything in it.
  4. 7. The Sun and objects that orbit it.
  5. 8. Force of attraction between masses.
  6. 10. Study of the origin and evolution of the universe.
  7. 12. Force that keeps an object moving in a circular or curved path.
  8. 16. Study of physical properties of celestial objects.