full transcript

From the Ted Talk by Risa Wechsler: The search for dark matter -- and what we've found so far

Unscramble the Blue Letters


Now, what happens if you don't have dark matter? If you don't have dark matter, those sopts never get clumpy enough. It turns out, you need at least a million times the mass of the Sun in one dense region, before you can start forming stars. And without dark meattr, you never get enough suftf in one pcale.

So here, we're looking at two universes, side by side. In one of them you can see that things get clumpy quickly. In that universe, it's really easy to form galaxies. In the other uneisvre, the things that srtat out like small clumps, they just stay really small. Not very much happens. In that universe, you wouldn't get our galaxy. Or any other galaxy. You wouldn't get the Milky Way, you wouldn't get the Sun, you wouldn't get us. We just couldn't exist in that universe.

Open Cloze


Now, what happens if you don't have dark matter? If you don't have dark matter, those _____ never get clumpy enough. It turns out, you need at least a million times the mass of the Sun in one dense region, before you can start forming stars. And without dark ______, you never get enough _____ in one _____.

So here, we're looking at two universes, side by side. In one of them you can see that things get clumpy quickly. In that universe, it's really easy to form galaxies. In the other ________, the things that _____ out like small clumps, they just stay really small. Not very much happens. In that universe, you wouldn't get our galaxy. Or any other galaxy. You wouldn't get the Milky Way, you wouldn't get the Sun, you wouldn't get us. We just couldn't exist in that universe.

Solution


  1. place
  2. matter
  3. spots
  4. stuff
  5. universe
  6. start

Original Text


Now, what happens if you don't have dark matter? If you don't have dark matter, those spots never get clumpy enough. It turns out, you need at least a million times the mass of the Sun in one dense region, before you can start forming stars. And without dark matter, you never get enough stuff in one place.

So here, we're looking at two universes, side by side. In one of them you can see that things get clumpy quickly. In that universe, it's really easy to form galaxies. In the other universe, the things that start out like small clumps, they just stay really small. Not very much happens. In that universe, you wouldn't get our galaxy. Or any other galaxy. You wouldn't get the Milky Way, you wouldn't get the Sun, you wouldn't get us. We just couldn't exist in that universe.

Frequently Occurring Word Combinations


ngrams of length 2

collocation frequency
dark matter 23
billion years 3
small galaxies 3
small clumps 3
model universes 2
big bang 2
dark energy 2
million galaxies 2
light distorted 2
magellanic cloud 2


Important Words


  1. clumps
  2. clumpy
  3. dark
  4. dense
  5. easy
  6. exist
  7. form
  8. forming
  9. galaxies
  10. galaxy
  11. mass
  12. matter
  13. milky
  14. million
  15. place
  16. quickly
  17. region
  18. side
  19. small
  20. spots
  21. stars
  22. start
  23. stay
  24. stuff
  25. sun
  26. times
  27. turns
  28. universe
  29. universes