Space Terms and Definitions

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Across
  1. 2. A dark area on the sun's surface that is cooler than the area surrounding it
  2. 6. To orbit a central point or object
  3. 7. A day when the hours of daylight equal the hours of darkness
  4. 9. A meteoroid that burns up as it travels through Earth's atmosphere
  5. 12. The Sun and all the celestial objects that travel around it
  6. 14. An imaginary line around which an object rotates
  7. 17. The force of a rocket engine used to get a ship into space
  8. 18. Gases and charged particles that are blasted above an active region of the Sun's photosphere
  9. 19. A dense group of stars held together by gravity
  10. 21. A model of the universe in which the Sun is at the center
  11. 22. A massive collection of gases in space that emits large amounts of energy
  12. 23. Producing and giving off light
  13. 24. A small rocky, irregularly shaped celestial object that orbits the sun
  14. 26. Everything that exists, including all matter, energy and space
  15. 28. A day when Earth's axis is most inclined toward, or away, from the sun
  16. 29. A huge rotating collection of gas, dust, stars and planets
Down
  1. 1. A bowl-shaped hole caused by the impact of a meteorite or asteroid
  2. 3. A celestial object that orbits a larger celestial object
  3. 4. A large, round celestial object that travels around a star
  4. 5. A model of the universe in which the Earth is at the center
  5. 8. A large chunk of ice, rock and dust that orbits the Sun
  6. 9. A small celestial object made of rock or metal that is smaller than an asteroid
  7. 10. The distance that light travels in a year
  8. 11. Any object that exists in space
  9. 13. When the moon passes between the Sun and the Earth and blocks some or all of the Sun's light
  10. 15. Electrically charged particles that flow from the sun's corona out into space
  11. 16. The closed path that a celestial object takes around another object
  12. 20. A robotic or human occupied vehicle used to explore space
  13. 25. A vertical section of Earth's surface that has a uniform time
  14. 27. Moves, or turns, around a center point
  15. 30. Coloured lights in the sky produced when the solar wind comes in contact with Earth's magnetic field and the atmosphere