Across
- 2. Large group of stars in space
- 3. Tiny particles of matter floating in space
- 5. A group of planets and celestial bodies that orbit around the sun
- 8. Curved path followed by a satellite as it revolves around an object
- 9. Luminous star that planets revolve around
Down
- 1. A theory that suggests the universe was created with a small point
- 4. A force causes objects with mass to attract one another
- 6. A celestial body that revolves around a planet
- 7. A state of matter with infinite volume and shape