Earth and Beyond

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Across
  1. 1. Stars seem to move due to ...... of Earth.
  2. 5. Dwarf planet in our solar system.
  3. 6. Made of ice, dust and rocky materials.
  4. 7. The planet that does not have an atmosphere.
  5. 9. Made of metals and rocky materials.
  6. 10. Imaginary line on which Earth rotates.
Down
  1. 2. The most distant planet in our solar system.
  2. 3. Model where Earth is center of solar system.
  3. 4. Used to observe space.
  4. 8. Collection of star systems.