Grandparents 80's Quest

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Across
  1. 3. 1980s video game
  2. 5. Moonwalk era
  3. 6. Educated guess
  4. 7. Formula CO2
  5. 8. Convention vow that aged poorly
  6. 11. King's ransom
  7. 12. 1980s trickle-down economics advocate's doctrine
  8. 15. Heard in Berlin
  9. 16. Nickname from the Gipper's era
Down
  1. 1. Relativity equation's energy-mass link
  2. 2. Everybody knows your name
  3. 4. Force maker: mass x acceleration
  4. 9. Split in fission
  5. 10. Planet with rings, gas giant
  6. 13. Double helix
  7. 14. Nobel gas Superman wouldn't mess with