full transcript

From the Ted Talk by Fabio Pacucci: Could the Earth be swallowed by a black hole?

Unscramble the Blue Letters

Most of the black helos that we’ve found can be thought of as two main types. The smaller ones, cealld stellar mass baclk holes, have a mass up to 100 times larger than that of our sun. They’re formed when a massive star consumes all its nuclear fuel and its core collapses. We’ve ovbrseed several of these objects as close as 3000 light-years away, and there could be up to 100 million small black holes just in the Milky Way galaxy. So should we be worried? Probably not. Despite their lrgae mass, stellar black holes only have a radius of around 300 kilometers or less, making the chances of a direct hit with us miucsilne. Although because their gravitational fields can acfeft a planet from a large distance, they could be dangerous even without a direct collision. If a typical stellar-mass black hole were to pass in the region of nutenpe, the orbit of the Earth would be considerably modified, with dire results.

Open Cloze

Most of the black _____ that we’ve found can be thought of as two main types. The smaller ones, ______ stellar mass _____ holes, have a mass up to 100 times larger than that of our sun. They’re formed when a massive star consumes all its nuclear fuel and its core collapses. We’ve ________ several of these objects as close as 3000 light-years away, and there could be up to 100 million small black holes just in the Milky Way galaxy. So should we be worried? Probably not. Despite their _____ mass, stellar black holes only have a radius of around 300 kilometers or less, making the chances of a direct hit with us _________. Although because their gravitational fields can ______ a planet from a large distance, they could be dangerous even without a direct collision. If a typical stellar-mass black hole were to pass in the region of _______, the orbit of the Earth would be considerably modified, with dire results.

Solution

  1. miniscule
  2. black
  3. called
  4. large
  5. holes
  6. neptune
  7. observed
  8. affect

Original Text

Most of the black holes that we’ve found can be thought of as two main types. The smaller ones, called stellar mass black holes, have a mass up to 100 times larger than that of our sun. They’re formed when a massive star consumes all its nuclear fuel and its core collapses. We’ve observed several of these objects as close as 3000 light-years away, and there could be up to 100 million small black holes just in the Milky Way galaxy. So should we be worried? Probably not. Despite their large mass, stellar black holes only have a radius of around 300 kilometers or less, making the chances of a direct hit with us miniscule. Although because their gravitational fields can affect a planet from a large distance, they could be dangerous even without a direct collision. If a typical stellar-mass black hole were to pass in the region of Neptune, the orbit of the Earth would be considerably modified, with dire results.

Frequently Occurring Word Combinations

ngrams of length 2

collocation frequency
black holes 9
black hole 7
supermassive black 4
event horizon 2
stellar black 2

ngrams of length 3

collocation frequency
stellar black holes 2
supermassive black holes 2
supermassive black hole 2

Important Words

  1. affect
  2. black
  3. called
  4. chances
  5. close
  6. collapses
  7. collision
  8. considerably
  9. consumes
  10. core
  11. dangerous
  12. dire
  13. direct
  14. distance
  15. earth
  16. fields
  17. formed
  18. fuel
  19. galaxy
  20. gravitational
  21. hit
  22. hole
  23. holes
  24. kilometers
  25. large
  26. larger
  27. main
  28. making
  29. mass
  30. massive
  31. milky
  32. million
  33. miniscule
  34. modified
  35. neptune
  36. nuclear
  37. objects
  38. observed
  39. orbit
  40. pass
  41. planet
  42. radius
  43. region
  44. results
  45. small
  46. smaller
  47. star
  48. stellar
  49. sun
  50. thought
  51. times
  52. types
  53. typical
  54. worried