Moderate difficulty suitable for most players
Celestial Mechanics and Cosmic Phenomena
Challenging puzzle for experienced crossword solvers
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Across
- 1. Instrument dissecting light to reveal elemental composition remotely
- 2. Hypothetical quantum mediating particle of gravity
- 3. Invisible boundary beyond which even light cannot escape a black hole
- 5. Rocky remnant of early solar system orbiting the sun
- 10. Precise measurement of stars’ positions and motions in space
- 12. Interstellar cloud glowing with ionized gas and dust, star birthing ground
- 14. Cataclysmic stellar explosion dispersing heavy elements across galaxies
Down
- 4. Extremely luminous galactic nucleus powered by a supermassive black hole
- 6. Region dominated by a planet's magnetic field deflecting solar wind
- 7. Study or myth of origin and development of the universe
- 8. Rotating neutron star emitting regular pulses of electromagnetic radiation
- 9. Stable gravitational balance points between two massive bodies
- 11. Quantum of electromagnetic radiation, carrying discrete energy packets
- 13. Outermost shell where atmospheric gases escape Earth's pull
- 15. Closest orbital approach point of a satellite around Earth