solar system

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Across
  1. 3. seventh smallest planet in solar system
  2. 5. An object that orbits around a larger one.
  3. 7. group of stars which seem to form a recognisable pattern in the sky
  4. 9. Astronomical unit of length equal to the distance light travels in a vacuum in one year
  5. 10. small luminous object in the sky
Down
  1. 1. this constellation is visible from northern hemissphere
  2. 2. the star that provides light and warmth to the earth
  3. 4. mass of rock moving around in space
  4. 6. a star which is 425 light year away and 60000 times brighter than sun
  5. 8. this galaxy has a dia meter of 100000 light years