Astronomical terms

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Across
  1. 5. the force of attraction exerted by mass upon other bodies
  2. 6. are satellites of planets
  3. 7. a collection of billions of stars held by gravity
  4. 9. is a body held in the gravity
  5. 10. the layers of gases that surround many planets and other bodies.
  6. 11. the pathof the earth around the sun
Down
  1. 1. satellites of stars
  2. 2. divides into the halves with the equator
  3. 3. hole, a region in space that has such an enormous force of gravity that light cannot escape
  4. 4. known as snowballs of the solar system
  5. 8. a person who travels to space
  6. 9. eclipse, an eclipse of the sun occurs when the passing moon obscures the sun