Across
- 2. a dark or discoloured spot on the skin caused by exposure to the sun
- 4. a system of millions or billions of stars
- 7. meteorite is a piece of rock or metal that has fallen to the earth's surface
- 8. a celestial object consisting of a nucleus of ice and dust
Down
- 1. the star round which the earth orbits
- 3. a celestial body moving in an elliptical orbit around a star
- 5. a small rocky body orbiting the sun
- 6. one complete circuit around an orbited body