Puzzle #7 Scientific Discoveries

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Across
  1. 3. Force pulling objects toward the center
  2. 5. Electromagnetic radiation for imaging
  3. 8. Region with gravitational pull too strong
  4. 11. Alexander Fleming's antibiotic
  5. 12. Replicating organisms genetically
  6. 14. Substances that kill bacteria
  7. 15. Neutral subatomic particle
Down
  1. 1. Double helix genetic material
  2. 2. Cosmological origin of the universe
  3. 4. Edward Jenner's immunization method
  4. 6. Marie and Pierre Curie's discovery
  5. 7. Negatively charged subatomic particle
  6. 9. John Dalton's model of matter
  7. 10. Einstein's theory of space and time
  8. 13. Gene-editing technology