Off The Planet - Outer Space

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Across
  1. 2. a huge collection of gas, dust, stars and their solar systems, all held together by gravity
  2. 3. A natural satellite of a planet
  3. 7. The only planet in our solar system with life
  4. 8. The planet closest to the sun
  5. 9. Willian Herschel discovered this planet
  6. 11. The planet well know for its rings
  7. 13. The object at the centre of our solar system
  8. 14. A system of 8 planets and their moons orbiting a star
  9. 15. The curved path of a celestial object around a star, planet or moon
Down
  1. 1. A dwarf planet in our solar system
  2. 3. The last of the small planets
  3. 4. This planet is know as one of the ice giants
  4. 5. Another name for our Sun
  5. 6. The planet between Earth and Mercury
  6. 10. the whole of space and all the stars, planets, and other forms of matter and energy in it
  7. 12. An invisible line around which an object rotates, or spins