Across
- 1. - Circular depression formed by meteor impacts on the Moon
- 4. - Precision medical procedure performed with lasers
- 8. - Range of electromagnetic waves including gamma rays
- 10. - High-energy rays emitted during cosmic outbursts
- 11. - Field of science covering matter, light, and energy
- 12. - Surface layer related to anatomical tissue structures
- 15. - Transparent front part of the human eye
- 16. - Relating to light, vision, or laser physics
- 18. - Protective gaseous shield surrounding Earth
- 20. - Sensor instrument used to register deep space signals
Down
- 2. - Dense core remaining after a star collapses
- 3. - Systematic study of the physical and natural world
- 5. - Search and investigate uncharted realms
- 6. - Anatomical details visible only under high magnification
- 7. - Describes laser energy released in brief bursts
- 9. - Individual undergoing corrective laser surgery
- 13. - Highly magnetic neutron star that emits giant flares
- 14. - Structured mission of discovery in space or science
- 17. - Trainee or professional who travels into space
- 19. - Path traced by a body traveling around a planet