Across
- 7. One of the two deflection strategies used on asteroids
- 8. Cooler regions found in the photosphere
- 10. The comet with the longest tail discovered in 1996
- 11. Another name for the Triangulum galaxy
- 13. Father of Modern Rocketry
- 18. Variable stars
- 19. Edwin Hubble's book
- 20. The stage in the universe's creation that followed inflation
- 22. The Russian city hit by a meteorite on February 15, 2013
- 25. Most common type of galaxy
Down
- 1. A pattern exhibited by cut stony-iron meteorites
- 2. Used to describe the levels of the Torino scale
- 3. Largest galaxy in the Local Group
- 4. Extrasolar planet
- 5. Cause of the blue tinge on Pegasus' atmosphere
- 6. A collective term for the gas giants; _____ planets
- 9. Host star of HD 209458 b aka Osiris
- 12. An indirect method of finding exoplanets using radial velocity
- 14. Classification of Proxima Centauri
- 15. A period of time when the universe was extremely small
- 16. The study of heavenly bodies
- 17. The Greek word for law
- 21. An irregular galaxy named M82
- 23. The center of a galaxy's disk bulge
- 24. The large, dim region surrounding the entire galaxy