Solar system

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