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  1. Visualisation of quark structure of proton
  2. Flames
  3. Galileo thermometer
  4. Guitar string vibrating
  5. Close-up of red milky way universe
  6. CDF particle detector, Fermilab
  7. Fantasy: Inspirational Quote and Motivational Poster
  8. Refraction of light by lenses
  9. Toast
  10. Refraction of light by bi-concave lens
  11. Galileo thermometer
  12. Guitar Strings At Rest And Vibrating
  13. Moonlight illuminates the Schulman telescope on Mount Lemmon
  14. Art representing superstrings
  15. An astronomer peers through a telescope at the Orion region of the sky
  16. Can evacuated by vacuum pump