Across
- 2. a collection of planets that orbit a star
- 5. a collection of dust, gas, stars all held together by gravity
- 6. a round object that must orbit a star and has enough gravity to clear other objects away
- 8. a natural satellite that orbits planets
- 10. a rocky body in space that orbits the sun
Down
- 1. the planetary system that we live in!
- 3. the planet we live on
- 4. a luminous ball of gas held together by gravity
- 7. all the star systems, galaxies, dust, stars, matter, and energy that exist
- 9. a body made of rock, ice, and dust that orbits the sun