Grandparents 80's Quest

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Across
  1. 3. Relativity equation's energy-mass link
  2. 5. Formula CO2
  3. 7. Convention vow that aged poorly
  4. 9. Moonwalk era
  5. 12. Nickname from the Gipper's era
  6. 13. 1980s trickle-down economics advocate's doctrine
  7. 14. Double helix
  8. 15. Force maker: mass x acceleration
Down
  1. 1. Everybody knows your name
  2. 2. 1980s video game
  3. 4. King's ransom
  4. 6. Split in fission
  5. 8. Planet with rings, gas giant
  6. 10. Heard in Berlin
  7. 11. Educated guess