Discovery Science 7 - Space Crossword

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Across
  1. 2. The time taken for Earth to complete one full orbit of the Sun
  2. 4. A gas giant that rotates on its side
  3. 9. The third planet from the Sun and the only known planet to support life
  4. 10. The closest planet to the Sun and the smallest of the eight planets
  5. 13. The planet famous for its bright ring system
  6. 14. The company developing rockets for Mars exploration
  7. 17. The invisible line that Earth spins around through the North and South Poles
  8. 18. The mission that first landed humans on the Moon
  9. 20. Changes in temperature and daylight caused by Earth’s tilted axis
  10. 21. Earth’s natural satellite
  11. 23. A tiny, extremely dense remnant left after a massive star explodes
  12. 24. The Sun and everything that revolves around it
  13. 27. The angle of Earth’s axis that causes seasonal changes
  14. 28. A very young forming star that has not yet become fully stable
  15. 30. An icy space object that forms a glowing tail when it gets close to the Sun
  16. 31. A rocky body that travels around the Sun, often found between Mars and Jupiter
  17. 32. An object that circles a larger body in space
Down
  1. 1. The furthest planet from the Sun and a cold blue gas giant
  2. 3. The galaxy that contains our solar system
  3. 5. A huge explosion that happens when a massive star runs out of fuel
  4. 6. Extra strong tides that occur when the Sun, Earth and Moon line up
  5. 7. A round object that orbits the Sun but has not cleared other objects from its path
  6. 8. A region in space where gravity is so strong that not even light can escape
  7. 11. An enormous system of stars, gas and dust held together by gravity
  8. 12. The hottest planet in our solar system due to its thick atmosphere
  9. 15. A large, nearly spherical body that travels around a star and has cleared its orbit
  10. 16. One complete spin of Earth on its axis
  11. 19. The curved path one object follows as it moves around another
  12. 21. The red planet that may once have had liquid water
  13. 22. The force that pulls objects with mass towards each other
  14. 23. A vast cloud of gas and dust where new stars are formed
  15. 24. A massive glowing ball of hot gas that gives off light and heat
  16. 25. The long stable period in a star’s life when it steadily produces energy
  17. 26. The largest planet in our solar system and a gas giant with a Great Red Spot
  18. 29. The regular rise and fall of sea levels caused mainly by the Moon’s gravity