Across
- 2. a group of visible stars that form a pattern viewed from Earth
- 5. Large natural objects that orbit, or travel around, stars
- 6. Consists of the sun and everying that revolves around the sun.
- 9. Sun-centered theory
- 10. An instrument that allows people to see distant objects.
Down
- 1. a tool for finding direction, the needle always points north
- 3. Earth-Centered Theory
- 4. The study of space.
- 7. separate the inner planets from the outer planets
- 8. A chart that shows stars in the sky during times throughout the year.