Kali's Space Crossword

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Across
  1. 2. A triple star system held together by gravity
  2. 4. In the core of a star, the star fuses ___ and helium together
  3. 9. The constellation of a lion is called this
  4. 10. A galaxy known as Messier 31 and is 2.5 million light years away
  5. 12. A massive object in space that doesn't let anything escape it even light
  6. 15. Something that creates energy through nuclear fission
  7. 16. A constellation within the Ursa Major, also known as the Great Bear
  8. 17. A region of the solar system beyond Neptune, has lots of comets, dwarf planets, and other small objects
  9. 19. A spiral galaxy that contains our galaxy
  10. 21. The international space station takes this long to orbit around the Earth
  11. 24. A planet in our solar system, we live on it
  12. 25. Otherwise known as the north star
  13. 26. A telescope that orbits the Earth, named after Edwin Hubble
Down
  1. 1. ISS is short for this, many astronauts have been inside this
  2. 3. Pictures that we see in the stars are called this
  3. 5. Something with billions of stars, gas, and dust held together by gravity
  4. 6. Something sent into space to collect information or for communication
  5. 7. A space probe that NASA launched, part of the voyager program
  6. 8. Earth and Mars are types of these
  7. 11. You can use this to find a planets size density, and gravitational influence
  8. 13. The force that pulls objects together
  9. 14. The Earth takes 365 days to ___ around the sun
  10. 18. An astronomical unit equal to the distance light travels in one year
  11. 20. An objects resistance to a change in motion
  12. 22. A large cloud of dust and gas in space
  13. 23. The brightest star in the night sky