Across
- 2. A star that the earth orbits
- 5. years A measure of distance
- 6. one of eight main celestial obies orbiting the sun
- 9. Balls of ice and dust orbiting the sun
- 10. A rock in space that enters our planet
Down
- 1. a cluster of stars in the sky
- 3. an entirety of time, space, matter and energy
- 4. The science that studies celestial objects
- 7. a small rocky body
- 8. a huge ball of glowing gas