Across
- 2. – The point in the sky directly above an observer
- 4. – The North Star, used for navigation
- 7. – A cloud of gas and dust in space, often the birthplace of stars
- 9. – Refers to our galaxy, the Milky Way
- 11. – A group of stars bound together by gravity
- 13. – The imaginary line dividing Earth into the Northern and Southern Hemispheres
- 14. – A luminous celestial body made of gas
- 15. – A constellation named after a king in Greek mythology
- 17. – A small icy body that orbits the Sun, often with a tail
- 18. – When one celestial body obscures another
- 19. – A prominent constellation known as "The Hunter"
- 20. – A massive system of stars, gas, and dust, held together by gravity
Down
- 1. – A streak of light caused by a meteoroid entering Earth’s atmosphere
- 3. – A sudden, temporary increase in the brightness of a star
- 5. – The brightest star in the night sky
- 6. – A nearby galaxy, also the name of a constellation
- 8. – The Latin name for "bear," as in the constellations Ursa Major and Ursa Minor
- 10. – The height above Earth's surface, often used in astronomy
- 12. – An instrument used to observe distant stars and planets
- 16. – A powerful explosion marking the death of a star
