Across
- 3. line which the earths surface and the sky appears to meet.
- 4. System- our sun and our planets
- 9. a galaxy is a group of billions of stars.
- 10. studies of objects in space and their characteristics
- 11. universe is everything that exists.
- 12. astronomers ask questions about how the universe works
- 13. a round massive object that orbits or revolves around a star.
- 14. Belt- a torus shaped region in the solar system.
- 15. series of events that are regularly repeated.
Down
- 1. the curved path of a celestial object in space.
- 2. obsolete to cause to go around in a orbit.
- 4. the time in the morning when the sun appears.
- 5. a group of stars that form a pattern in the sky
- 6. imaginary line drawn across the earth from both poles.
- 7. great size of extent of something
- 8. time in the evening when the sun disappears.