Across
- 2. Cloud of gas and dust in space
- 5. Aging large star
- 9. Between stars
- 13. Study of the universe
- 16. Point of infinite density in a black hole
- 18. Light display near Earth’s poles
- 19. Region with gravity so strong nothing escapes
- 20. Icy body with a glowing tail
- 22. Distance light travels in one year
- 23. Orbits a star, massive enough to be round
- 26. Extremely bright distant object powered by a black hole
- 28. Exploding star
- 30. Invisible matter in the universe
Down
- 1. Group of stars forming a pattern
- 3. dwarf Small, dense dying star
- 4. The universe as an ordered whole
- 6. Vast system of stars, gas, and dust
- 7. Force pulling objects toward each other
- 8. Famous space probe exploring the solar system
- 10. Planet outside our solar system
- 11. Relating to the sun
- 12. When one body blocks another’s light
- 14. Event that created the universe
- 15. Luminous sphere of gas in space
- 17. Natural satellite of a planet
- 21. Space rock entering Earth’s atmosphere
- 24. Rapidly spinning neutron star emitting radiation
- 25. Small rocky body orbiting the sun
- 27. Particle in the nucleus of an atom
- 29. Path of a celestial body around another