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  1. Early electrical equipment
  2. Molecule Milk
  3. Genetic code
  4. Mars
  5. Jurassic dinosaurs
  6. The bones of the jaw
  7. Einstein Atom II
  8. Nikola Tesla, Serb-US physicist
  9. Molecule Chili
  10. Armillary sphere
  11. Illustration of syringe needle drawing blood lipid
  12. Newspaper printing press
  13. Purple Watercolor Agate II
  14. Oil industry drill bit
  15. Monarch butterfly chrysalis about to hatch
  16. Skeleton playing football
  17. Serotonin neurotransmitter molecule
  18. Human lungs, artwork
  19. Apollo 1 Astronauts Working by the Pool
  20. A Phrenological Map Of The Human Brain. From Virtue's Household Physician, 1924
  21. Wood. Scanning electron microscope (SEM)
  22. ATLAS detector
  23. Molecule Honey
  24. Molecule Cinnamon
  25. Galileo thermometer
  26. Brass astrolabe from the middle ages
  27. Body musculature
  28. Dione and ring shadows on Saturn, Cassini
  29. Gullies on Mars
  30. Molecule Vanilin
  31. Aquatic Collage
  32. Van Gogh from Space - USGS Earth as Art
  33. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  34. Portrait of Charles Darwin (1809-1882) 1883
  35. Medical equipment on a tray
  36. Colon blood vessels, light micrograph
  37. Carburetor
  38. Microscopic view of coronavirus
  39. Bronchial tree and lungs, artwork
  40. Galloway steam boiler
  41. Universe timeline, artwork
  42. Rocket launch
  43. Plague doctor, 17th century artwork
  44. Medical equipment
  45. Engineering equipment
  46. Blueprint Astronomy
  47. Cross section of planet Earth showing the inner core
  48. Nurse collecting water, USA, 1918