Across
- 1. A gas giant that is the seventh planet in our solar system.
- 3. The force that attracts a mass toward another mass.
- 4. The scientific study of the movement of the planets.
- 6. The regularly repeated path that a planet moves.
- 8. A branch of science that looks at planets and space.
- 9. To move in a circular orbit around.
Down
- 2. A man-made object placed in orbit in orbit around Earth.
- 5. To move or cause to move in a circle round an axis or centre.
- 7. The third planet in our solar system.
