Across
- 2. "A system of stars, stellar remnants, interstellar gas, and dust."
- 6. "The path that an object takes as it revolves around another object."
- 8. "The _____ is a star at the center of our solar system."
- 9. "A vehicle or machine designed for travel or operation in outer space."
- 10. "A small icy body that orbits the Sun."
Down
- 1. "Earth's natural satellite that orbits around it."
- 3. "A person trained to travel in space."
- 4. "A bowl-shaped depression on the surface of a planet or moon."
- 5. "A small rocky body that orbits the Sun."
- 7. "A cloud of gas and dust in space."