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