Key words for our known universe

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Across
  1. 3. What we cant see that makes up the space in our universe
  2. 5. Stars, planets, galaxies, solar system:______
  3. 7. Universe expands so far that everything inside has gone cold
  4. 9. Questioning the world and its _________
  5. 12. ________ Cameras
  6. 13. If someone(like a party) is against you, then they're the __________
  7. 14. What we call where we live
  8. 16. What holds our universe in place like glue
  9. 17. The universe expands so much it pulls itself apart
  10. 18. Plants, trees, vines, flowers, animals, bugs:______
  11. 20. Something increasing, why we conquer land
  12. 21. The universe implodes
  13. 22. What keeps us(and other objects) grounded
Down
  1. 1. Essentially gravity doing its job
  2. 2. What English teachers make you do often
  3. 4. Something speeding up
  4. 6. What holds stars, planets, and systems
  5. 8. What we need to power anything in our house
  6. 10. What pretty much makes up everything
  7. 11. What radars are made for
  8. 15. What we can see in the universe
  9. 16. What pushes us away from each other
  10. 19. TV ______