Across
- 2. alignment of the optical elements in an instrument
- 4. usually blue but we prefer it black
- 5. Pluto is not one of these
- 7. telescope that uses mirrors and lenses
- 9. the first element on the periodic table
- 12. a piece of glass that bends light
- 16. an astronomers favorite time of day
- 17. bigger is better
- 18. The next star to explode in our galaxy
- 19. a group of stars that looks like something
- 21. my telescope is ________ saturn all night!
- 24. the study of the stars
- 25. Earth ______ on its axis
- 26. what you use to take a picture of the night sky
- 27. the bane of an astronomer's existence
Down
- 1. Schmidt and ________ made a telescope
- 3. an astronomer's favorite tool
- 6. the most beautiful pictures come from _______ (we aren't biased)
- 8. the elliptical rotation of two astronomical objects
- 10. telescope that uses mirrors
- 11. telescope that uses lenses
- 13. useful filters for deep sky imaging
- 14. a very reflective surface
- 15. space snowball
- 16. orion has one of these in its sword
- 20. 99.99% of the mass in our solar system is here
- 22. giant cluster of stars and gas
- 23. some of Jupiter's moons are named after him