Across
- 2. A planet that has a volcano on it
- 6. objects that look like spiral shaped clouds which later were found to be galaxies themselves lying outside our milky-way galaxy
- 8. the collection of eight planets and their moons in orbit around the sun
- 10. biggest planet in our solar system
Down
- 1. cloud of gas and dust in outer space
- 3. Milky Way Galaxy, large spiral system consisting of several hundred billion stars
- 4. small rocky body orbiting the sun (not a planet)
- 5. the only planet found to have life on it
- 7. A dirty snowball
- 9. gives off heat planets orbit it and it's the only star in our solar system