Across
- 4. First US woman to spacewalk
- 7. Apollo software lead
- 13. COBOL creator / Grace
- 14. Mathematician Gladys
- 15. Pulsar discoverer Jocelyn
- 19. DNA's X-ray image taker
- 22. Jumping genes discoverer
- 23. Two-time Nobelist
- 24. Computing pioneer Edith
- 25. First female US MD
Down
- 1. First Black woman in space
- 2. Ancient Greek mathematician
- 3. SHIUNG Wu, the 'First Lady of Physics'
- 5. Abstract algebra genius
- 6. Standard candle astronomer
- 8. Primatologist / Chimps
- 9. First programmer
- 10. NASA 'Hidden Figure'
- 11. Nuclear fission discoverer
- 12. Dark matter pioneer Vera
- 16. Actress / Frequency hopping
- 17. Astronomer Annie Jump ___
- 18. Drug developer Gertrude
- 20. Challenger astronaut Judith
- 21. Aviation pioneer
- 23. Silent Spring author