Across
- 4. Event where one celestial body passes in front of another
- 5. Planet that orbits a star outside our solar system
- 8. Explosive death of a massive star
- 12. Galaxy closest to the Milky Way
- 13. Small rocky body orbiting the sun
- 14. Fourth planet from the Sun, known as the Red Planet
- 15. Streak of light produced by a meteoroid entering Earth's atmosphere
- 18. Galaxy that contains our solar system
- 19. Extremely bright and distant object powered by a supermassive black hole
- 20. Cloud of gas and dust in space
Down
- 1. Icy body that releases gas and dust, forming a glowing tail
- 2. Region in space where gravity is so strong not even light can escape
- 3. Large, luminous star in a late stage of its evolution
- 6. Dwarf planet in the Kuiper Belt
- 7. Force that attracts objects towards each other
- 9. Highly magnetized rotating neutron star emitting beams of radiation
- 10. System of stars, gas, and dust held together by gravity
- 11. Object that orbits a planet or star
- 16. Space telescope that has captured detailed images of distant galaxies
- 17. Path of a celestial body around another body