Astronomy Crossword Puzzle

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Across
  1. 2. large natural objects that orbit, or travel around, stars
  2. 5. the seventh planet from the sun
  3. 7. large explosion that takes place at the end of a star's life cycle.
  4. 9. dwarf planet, not part of our solar system anymore
  5. 12. large spiral system consisting of several hundred billion stars
  6. 13. luminous ball of gas, mostly hydrogen and helium
  7. 16. everything in the universe beyond the top of the Earth's atmosphere
  8. 17. an American aerospace company in Hawthorne, California. The company makes and launch space rockets, as well as providing internet to customers. ...this is also the first company to successfully launch, orbit, and recover a spacecraft (Dragon in 2010).
  9. 19. a large telescope in space, launched into orbit by space shuttle Discovery on April 24, 1990
  10. 21. Space Transportation System, partially reusable rocket-launched vehicle designed to go into orbit around Earth, to transport people and cargo to and from orbiting spacecraft
  11. 22. the large round object that circles the Earth and that shines at night by reflecting light from the sun
  12. 23. where we live
Down
  1. 1. closest planet to the sun
  2. 3. huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity
  3. 4. a regular, repeating path that one object in space takes around another one
  4. 6. consists of the Sun and everything that orbits, or travels around, the Sun.
  5. 8. first person on the moon
  6. 10. space station, National Aeronautics and Space Administration
  7. 11. gas planet in between mars and saturn
  8. 14. second planet from the sun
  9. 15. furthest planet from the sun
  10. 18. fourth planet from the sun
  11. 20. large gas planet with rings
  12. 21. star we orbit