Across
- 2. The only planet with life.
- 4. Brilliant gas ball
- 5. Quantity of light
- 8. three dimensional extend where objects and events occur and have relative position and direction.
Down
- 1. Billions of stars together with gas
- 3. Very hot and made with hydrogen and helium
- 6. A natural satellite orbiting the sun
- 7. System 8 planets orbiting the sun