Solar system

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Across
  1. 2. Adds pressure to the sky
  2. 3. Luminous point in the sky
  3. 5. an irregular has no defined shape
  4. 6. system collection of eight planets and moons
  5. 7. The galaxy we live in`
  6. 8. an elliptical galaxy goes in an oval
Down
  1. 1. Floats around in the sky
  2. 2. Has gas stars and dust
  3. 3. a galaxy that goes in a spiral
  4. 4. hole a big black hole in the middle of the galaxy