Across
- 3. the star around which the planets revolve from which they receive heat and light
- 5. the very hot very dense center of our planet
- 6. a celestial body that is in orbit around the Sun
- 7. a large planet mostly composed of helium and/or hydrogen
- 9. the outer part of a planet
Down
- 1. the mostly solid bulk of Earth's interior
- 2. a planet that is composed primarily of silicate rocks or metals
- 4. an object that orbits a planet or another celestial body that is not a star
- 8. huge celestial bodies made of hydrogen and helium that produce light and heat from the
- 10. a group of planets and other bodies that revolve around a star