Astronomical Fourth of July

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Across
  1. 3. less bright lights seen in the sky every night
  2. 5. type of galaxy that's also a type of firework
  3. 8. handheld firework that burns hot enough to ignite thermite
  4. 9. bright lights seen in the sky tonight
Down
  1. 1. type of cheese most relevant to this program
  2. 2. national banner typically made of nylon or polyester
  3. 3. camouflage for tigers or zebras
  4. 4. this word comes from the Greek for "star-like"
  5. 6. device originally used for military scouting, which some Italian guy decided to point upward
  6. 7. country whose independence we celebrate today