Space crossword

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Across
  1. 3. a binary star of magnitude 0 that is the brightest star
  2. 4. the force that keeps us on earth
  3. 6. a cloud of dust or gas
  4. 9. a colorless and odorless gas
  5. 10. a space probe launched by NASA in 1977
  6. 11. relatively small star with and low luminosity
  7. 13. a region of the solar system beyond the orbit of Neptune
  8. 16. a north star
  9. 17. barred spiral galaxy
  10. 22. the time a space station travels around Earth
  11. 23. a large object that gets sent into space
  12. 24. a celestial body moving in an orbit around a star
  13. 26. an artificial body placed in orbit
  14. 27. a property of matter
Down
  1. 1. a small piece rock or dust that hits Earth's atmosphere from space
  2. 2. an irregular band of light
  3. 5. the natural satellite of Earth
  4. 7. the distance light travels in a year
  5. 8. a group of stars that make a pattern
  6. 9. a space telescope that takes pictures of space in space
  7. 12. a large spacecraft in orbit around earth
  8. 14. gravitational field so strong nothing can escape
  9. 15. a system of stars and many other things bound together by gravity
  10. 18. when an object circles around a star
  11. 19. the planet we live on
  12. 20. the property of the body that's in inertia
  13. 21. is a giant ball of gas and heat
  14. 25. an optical instrument that looks into space