planets

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Across
  1. 2. is the smallest planet in the Solar System and the closest to the Sun.
  2. 5. located roughly between the orbits of the planets Jupiter and Mars
  3. 7. is the second planet from the Sun
  4. 8. is the sixth planet from the Sun and the second-largest in the Solar System
  5. 10. is the seventh planet from the Sun
Down
  1. 1. is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined
  2. 3. the second-smallest planet in the Solar System, being larger than only Mercury
  3. 4. is the eighth and farthest-known Solar planet from the Sun
  4. 6. is the third planet from the Sun and the only astronomical object known to harbor life.
  5. 9. is the star at the centre of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core