Thursday crossword puzzle

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Across
  1. 1. where you go to lift weights and exercise
  2. 2. dentists put these wires on teeth
  3. 4. at the zoo, the lion is kept in a _______
  4. 5. Ruth Bader Ginsberg was a ______ on the Supreme Court
  5. 6. the opposite of dark
  6. 8. what do cats chase?
Down
  1. 1. you wash your hands to get rid of _______
  2. 3. Star Wars battles happen in outer _______
  3. 4. what kind of phone is an iPhone?
  4. 7. Jim Henson wrote It's Not Easy Being _______