Across
- 1. center of rotation in the north
- 4. great circle passing through your zenith and north and south points on your horizon
- 5. learned to navigate by the stars for hundreds of years
- 8. all points 90 degrees from the zenith
- 10. instruments developed by Islamic scholars to observe the angles of the sun and stars
- 14. the apparent shifting of positions due to different distances from the observer
- 15. Line passing through zenith and connecting north and south points on the horizon
- 16. the point directly overhead
- 17. catalogued stars according to apparent magnitude
- 21. center of rotation in the south
- 22. created a calendar based on Venus
- 24. the earth rotates around this in 24 hours
- 25. the daily paths that stars appear to move around the celestial poles when observed from the spinning earth
- 26. The study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs and the natural world.
- 29. the distance light travels in one year
- 30. the north star
- 31. popular unofficial star patterns
- 34. the study of the cosmos, the structure and origin of the universe
- 36. distance measured eastward or westward along the celestial equator from the zero point (vernal equinox)
- 37. the change in appearance of the sky with the seasons is due to the Earth's revolution around the Sun
- 38. correlated the motion of the star Sirius to the flooding of the nile
- 39. star in constellation Orion that fluctuated in brightness recently
- 41. constellation with the big dipper in it
Down
- 2. the apparent path of the sun against the background of stars
- 3. angular distance above or below the celestial equator
- 6. earths axis wobble over 26,000 years
- 7. stars that never set in the northern hemisphere
- 9. The next closest star to the solar system
- 11. group of stars the Navajo people used to mark the seasons
- 12. the point directly below
- 13. the apparent globe around earth which all stars and planets are projected on
- 18. constellation with the little dipper in it
- 19. stars that appear to belong to groups that form recognizable patterns in the sky
- 20. the average distance between the Earth and the Sun.
- 23. The branch of science which deals with celestial objects, space, and the physical universe as a whole
- 27. stars that never set in the southern hemisphere
- 28. calculated in the size of the earth in 200BCE
- 32. Closest star to Earth
- 33. a system for writing large and small numbers
- 35. stars the big dipper that point to Polaris
- 40. largest constellation