Milky Way galaxy

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Across
  1. 5. a galaxy that is football-shaped and looks like one star
  2. 7. a group of planets and objects orbiting around a star
  3. 8. a instrument sent to other planets to explore what is too dangerous for humans
  4. 9. used to see into space
Down
  1. 1. a cluster of stars and other objects
  2. 2. something sent into space to observe earth
  3. 3. the distance light travels in one year
  4. 4. all of space and everything in it
  5. 6. galaxy with no definite shape
  6. 8. a galaxy that has a dense bulge with arms spiraling outward