Across
- 3. Neutron star with an extraordinarily strong magnetic field
- 6. Stream of charged particles from the Sun
- 7. Boundary beyond which nothing escapes a black hole
- 9. Cloud of gas and dust where stars can form
- 10. The fabric combining space and time
- 13. Instrument used to observe distant objects in space
- 15. Natural satellite of a planet
- 16. Force that keeps planets in motion
Down
- 1. Object that orbits a planet or star
- 2. Person trained to travel and work in space
- 4. Vast system of stars, gas, and dust
- 5. Recognized pattern of stars in the sky
- 8. Rocky object, often found between Mars and Jupiter
- 11. Nearly massless particle streaming from stellar cores
- 12. Icy traveler that forms a glowing tail near the Sun
- 14. When one celestial body blocks another