Across
- 1. a period of time that is 24 hours long and includes daytime and nighttime
- 4. a huge object in space that gives off heat and light
- 9. an arrangement of stars that form a recognizable pattern or outline
- 11. something we observe to be similar over and over again
- 12. an object’s orbital motion AROUND another object
Down
- 2. the length of time it takes for Earth to orbit the sun one time
- 3. a scientist who studies stars, planets,and other objects in the universe
- 5. other objects that orbit the sun
- 6. System the sun, the planets that orbit the sun,
- 7. the spin, or circular movement, of an object on an axis
- 8. the only star in our solar system
- 10. the pull between Earth and other objects, which acts without even touching