The Universe

123456789101112131415
Across
  1. 2. The sunset on this planet appears blue
  2. 9. This planet has four moons discovered by Galileo Galilei
  3. 10. The hottest planet with an average surface temperature of around 450 Celsius
  4. 11. Big Dipper The most common known constellation
  5. 12. The coldest planet
  6. 13. Not a planet but reflects the sun at night in the sky of Earth
  7. 14. Constellation for the Great Hunter
  8. 15. Only planet able to withstand human life
Down
  1. 1. A comet only seen every 76 years
  2. 3. This star takes up 99.86% of the solar system
  3. 4. Constellation of the dog
  4. 5. Planet that shares a name with the popular rock singer in the band Queen
  5. 6. This planet could float on water as it is made of mostly gas
  6. 7. Constellation that represents the zodiac sign Taurus
  7. 8. The furthest planet from the sun