Moderate difficulty suitable for most players
Interstellar Enigmas and Celestial Lexicon
Challenging puzzle for experienced crossword solvers
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Across
- 1. Rocky wanderer between Mars and Jupiter's belt
- 2. Closest orbital approach to the Sun in a celestial body's ellipse
- 6. Outermost boundary where Earth's atmosphere transitions to space
- 7. Science explaining universe's structure, origin, and fate
- 10. Cosmic cloud where stars are born or die in majestic spectacle
- 12. Pertaining to Earth's natural satellite
Down
- 3. Extremely luminous nucleus powered by a supermassive black hole
- 4. Infinite density core within a black hole's event horizon
- 5. Space debris surviving atmospheric entry to reach Earth's surface
- 8. Study of the origin and development of the universe
- 9. Elementary particle embodying light's dual wave-particle nature
- 11. Rotating neutron star sending precise radio pulses
- 13. Concerning paths celestial bodies follow around each other
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