Across
- 4. Large and small rocks or metallic masses orbiting the Sun; made up of materials similar to those that formed the planets
- 6. The force that causes objects with mass to attract one another
- 7. A large celestial body that revolves around a star in a solar system
- 8. A star and the group of planets and other celestial bodies that are held by its gravitational attraction and revolve around it
Down
- 1. A curved path followed by a satellite as it revolves around an object
- 2. The attraction between two objects due to the invisible force of gravity; the gravitational pull from the Moon is primarily responsible for the tides that form on Earth
- 3. A celestial body that revolves around a planet
- 5. The luminous star around which Earth and other planets revolve; composed mainly of hydrogen and helium