Technologies and discoveries

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Across
  1. 3. people believe that it sucks everything into nothingness
  2. 4. discovered in caves by touching something
  3. 6. was discovered by Nikola Tesla
  4. 9. they lived millions of years ago
  5. 10. we use that to launch people and stuff into space
  6. 13. we use it to see stars
  7. 16. we have it on a computer and a phone and other technologies
  8. 18. you can detect metal with this technology
  9. 22. in houses like that people produce food and technology etc.
  10. 23. indestructible material and very shiny
  11. 24. used to be a currency for pirates
  12. 26. people believe that space is?
  13. 27. happens with everything we constantly ev...?
  14. 28. recent discovery on mars
  15. 30. science that is very powerful today
Down
  1. 1. robots that are used in space
  2. 2. they give us rain
  3. 5. discovery that can connect us with people around the world
  4. 7. research done with a computer
  5. 8. we can see them while we use a telescope
  6. 11. small planet
  7. 12. discovered by melting sand
  8. 14. language that is old
  9. 15. shiny spikey expensive material
  10. 17. we use it everyday
  11. 19. language that is dead
  12. 20. we drive with them everyday
  13. 21. we see it everyday on the sky
  14. 25. made from trees and we draw on them
  15. 29. scientists use it to get dirt off of historical pieces