Across
- 2. Pioneering molecular biologist, DNA replication
- 4. Nobel laureate, structure of biomolecules
- 7. Geophysicist, seismic wave research
- 9. First professional woman astronomer in the U.S.
- 10. Classifier of stellar spectra
- 12. Discovered Cepheid variable stars
- 14. Discoverer of pulsars, radio astronomer
- 15. Nobel Prize in Medicine, transposable elements
- 17. Nobel Prize in Physiology or Medicine, RNA
- 20. Geneticist, gene regulation
Down
- 1. First African American woman in space
- 3. Neural networks pioneer
- 5. Geneticist, Green Revolution leader
- 6. Early woman in astronomy, celestial mechanics
- 8. Environmental engineer, water quality
- 11. Founder of modern nursing
- 13. Founder of the American Red Cross
- 16. Co-discoverer of DNA structure, geneticist
- 18. Nobel Prize in nuclear shell structure
- 19. Pioneer in wireless communication