Grade 9 Science - Space Exploration

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Across
  1. 3. this orbits the Earth once every 28 days
  2. 4. to move in an orbit or circle around something
  3. 5. ______________ space telescope was launched in 1990 aboard the Space Shuttle Discovery
  4. 7. to turn around a certain point
  5. 8. Earth's axis is pointed at this star all year long
  6. 11. space station a laboratory in space
  7. 14. a ball of dirty ice and snow in outer space
  8. 15. ______________ telescope uses mirrors to gather starlight
  9. 16. the smallest planet in our solar system
  10. 17. point in the sky directly overhead
  11. 19. Way this is the name of our galaxy
  12. 20. caused by the tilt of the Earth's axis away or toward the Sun
  13. 21. this planet is sometimes called 'the evening star' and is the closest planet to Earth
  14. 23. the path followed by an object in space as it goes around another object
Down
  1. 1. the huge space that contains all the energy and matter in existence
  2. 2. ______________ telescope uses lenses to gather starlight
  3. 3. a piece of stone or metal from space that falls to Earth's surface
  4. 6. iron in the soil gives this planet its red colour
  5. 9. having to do with the Sun
  6. 10. a huge ball of gas held together by its own gravity
  7. 12. the direction of a celestial object from the observer, expressed as the angular distance from the north
  8. 13. rocky space objects of varying sizes
  9. 18. this planet tilts over so far on its axis that it rotates on its side
  10. 22. the third closest planet to the Sun