full transcript
"From the Ted Talk by Henry Lin: What we can learn from galaxies far, far away"

Unscramble the Blue Letters

So that was very big. The second things is very hot. Okay, if I take an image of a galaxy cluster, and I subtract away all of the sgthalirt, what I'm left with is this big, blue blob. This is in fasle color. It's actually X-ray light that we're seeing. And the qeoutsin is, if it's not galaxies, what is emitting this light? The asewnr is hot gas, million-degree gas — in fact, it's plasma. And the reason why it's so hot goes back to the previous sldie. The extreme gravity of these systems is accelerating particles of gas to great speeds, and great speeds means geart temperatures. So this is the main idea, but sceince is a rough draft. There are many basic properties about this plasma that still confuse us, still puzzle us, and still push our understanding of the pciyhss of the very hot.

Open Cloze

So that was very big. The second things is very hot. Okay, if I take an image of a galaxy cluster, and I subtract away all of the _________, what I'm left with is this big, blue blob. This is in _____ color. It's actually X-ray light that we're seeing. And the ________ is, if it's not galaxies, what is emitting this light? The ______ is hot gas, million-degree gas — in fact, it's plasma. And the reason why it's so hot goes back to the previous _____. The extreme gravity of these systems is accelerating particles of gas to great speeds, and great speeds means _____ temperatures. So this is the main idea, but _______ is a rough draft. There are many basic properties about this plasma that still confuse us, still puzzle us, and still push our understanding of the _______ of the very hot.

Solution

  1. great
  2. false
  3. starlight
  4. science
  5. question
  6. slide
  7. answer
  8. physics

Original Text

So that was very big. The second things is very hot. Okay, if I take an image of a galaxy cluster, and I subtract away all of the starlight, what I'm left with is this big, blue blob. This is in false color. It's actually X-ray light that we're seeing. And the question is, if it's not galaxies, what is emitting this light? The answer is hot gas, million-degree gas — in fact, it's plasma. And the reason why it's so hot goes back to the previous slide. The extreme gravity of these systems is accelerating particles of gas to great speeds, and great speeds means great temperatures. So this is the main idea, but science is a rough draft. There are many basic properties about this plasma that still confuse us, still puzzle us, and still push our understanding of the physics of the very hot.

ngrams of length 2

collocation frequency
galaxy clusters 8
dark matter 5
galaxy cluster 3
dark energy 3

Important Words

  1. accelerating
  2. answer
  3. basic
  4. big
  5. blob
  6. blue
  7. cluster
  8. color
  9. confuse
  10. draft
  11. emitting
  12. extreme
  13. fact
  14. false
  15. galaxies
  16. galaxy
  17. gas
  18. gravity
  19. great
  20. hot
  21. idea
  22. image
  23. left
  24. light
  25. main
  26. means
  27. particles
  28. physics
  29. plasma
  30. previous
  31. properties
  32. push
  33. puzzle
  34. question
  35. reason
  36. rough
  37. science
  38. slide
  39. speeds
  40. starlight
  41. subtract
  42. systems
  43. temperatures
  44. understanding