Across
- 2. 30 times as far from the Sun as Earth.
- 5. this planet is named for the Roman god of agriculture and wealth.
- 6. Our “space neighborhood”.
- 7. it has the shortest day in the solar system.
- 9. It has over 200 billion stars.
- 10. the surface has volcanoes and deformed mountains.
- 12. The Egyptians called it "Her Desher”.
Down
- 1. This is a Yellow dwarf.
- 3. It spans a diameter of over 150 billion light years.
- 4. the weakest of the four known forces of nature.
- 8. It was the first planet found with the aid of a telescope.
- 11. The inner core is a solid sphere made of iron and nickel.