Across
- 2. Medium Consists of the mass and energy which fills the Solar System.
- 4. A celestial object consisting of a nucleus of ice and dust.
- 6. A piece of rock or metal that has fallen to the earth's surface from outer space.
- 8. An astronomical object consisting of a luminous spheroid of plasma.
- 9. a rounded astronomical body that is made by rocks.
Down
- 1. A circumstellar disc in the outer Solar System, extending from the orbit of Neptune.
- 3. A celestial body moving in an elliptical orbit round a star.
- 5. Minor planets, especially of the inner Solar System.
- 7. icy bodies located in the far reaches of the Solar System.