Across
- 3. the planets circle around the sun on an ...
- 6. a celestial body moving/ orbiting the sun
- 7. where all the planets live
- 9. a big star made of hot gas
Down
- 1. unit of length used to express astronomical distance
- 2. a snowball made of frozen gas, rocks and dust.
- 4. darker and cooler spot on the surface of the sun
- 5. huge collection of gas, dust and billions of stars
- 8. the earths light in the night
- 9. a object that moves around larger objects to give nasa a better understanding of our solar system.