Across
- 1. Relating to Earth, its land or its inhabitants
- 5. Daily movement of stars and the Sun from east to West caused from Earth's spinning
- 6. In geocentric models, the large circular orbit centered on Earth
- 7. Relating to the sky, outer space or the celestial sphere
- 10. The apparent yearly path of the Sun across the background stars
- 12. Temporary backward movement of a planet across the night sky
- 14. An imaginary giant rotating sphere surrounding Earth, used to map stars and planets
- 17. Yearly movement of Earth around the Sun, which changes which constellations we see at night
- 19. An event when one space object blocks light from another
- 20. Figure-8 pattern the Sun makes in the sky when viewed at the exact same time every day for a year
Down
- 2. In geocentric models, a small circle that a planet moves along while the center of that small circle moves along a deferent
- 3. An old, incorrect idea that Earth sits motionless at the center of the universe
- 4. A region of the night sky containing a recognized star pattern
- 8. Ancient and medieval element believed to fill the universe above the terrestrial sphere, making up stars and planets
- 9. A band of the sky extending 8 degrees on either side of the ecliptic, containing 12 constellations
- 11. Scientific model where Earth and other planets orbit the sun
- 13. Period of the year with specific weather patterns caused by Earth's axis
- 15. 2 days of the year with specific weather patterns
- 16. 2 days of the year when the sun is furthest North or South of the equator, bringing the shortest, or longest day
- 18. A popular, unofficial pattern of stars