Across
- 2. The last of the four inner planets, just outside Earth's orbit.
- 5. The planet with rings. A year there lasts 30 Earth years.
- 7. The line a planet spins around. One turn takes one day.
- 8. The planet furthest from the Sun. Its year lasts 165 Earth years.
- 9. A ______ month is the 28 days the Moon takes to orbit Earth.
- 11. The name for the different views of the Moon we see from Earth.
- 13. The largest planet, 11.21 times the size of Earth.
- 14. The force from the Sun that keeps the planets moving around it.
Down
- 1. A thin curved sliver of Moon, seen just after or just before a new Moon.
- 3. The planet closest to the Sun. It travels fastest of all: 47.4 km/s.
- 4. The time a planet takes to complete one orbit of the Sun.
- 6. More than half the Moon's face is lit, but it is not full.
- 10. What the Moon is doing when we see less of its face each night.
- 11. In 2006 it stopped being called a planet and became a dwarf planet.
- 12. The path a planet follows around the Sun.
- 15. Its day is the longest of all the planets: 243 Earth days.