full transcript
"From the Ted Talk by Garik Israelian: How spectroscopy could reveal alien life"

Unscramble the Blue Letters

There can be different ways doing this. One is, for instance, tetcheuinm is a radioactive enmelet with a decay time of 4.2 million years. If you suddenly observe technetium in a sun-like star, you can be sure that somebody has put this element in the atmosphere, because in a natural way it is impossible to do this. Now we are reviewing the spretca of about 300 stars with extrasolar planets. And we are doing this job since 2000 and it's a very heavy project. We have been working very hard. And we have some interesting cases, candidates, so on, things which we can't really explain. And I hope in the near future we can crnoifm this.

Open Cloze

There can be different ways doing this. One is, for instance, __________ is a radioactive _______ with a decay time of 4.2 million years. If you suddenly observe technetium in a sun-like star, you can be sure that somebody has put this element in the atmosphere, because in a natural way it is impossible to do this. Now we are reviewing the _______ of about 300 stars with extrasolar planets. And we are doing this job since 2000 and it's a very heavy project. We have been working very hard. And we have some interesting cases, candidates, so on, things which we can't really explain. And I hope in the near future we can _______ this.

Solution

  1. spectra
  2. technetium
  3. confirm
  4. element

Original Text

There can be different ways doing this. One is, for instance, technetium is a radioactive element with a decay time of 4.2 million years. If you suddenly observe technetium in a sun-like star, you can be sure that somebody has put this element in the atmosphere, because in a natural way it is impossible to do this. Now we are reviewing the spectra of about 300 stars with extrasolar planets. And we are doing this job since 2000 and it's a very heavy project. We have been working very hard. And we have some interesting cases, candidates, so on, things which we can't really explain. And I hope in the near future we can confirm this.

ngrams of length 2

collocation frequency
chemical elements 7
extrasolar planets 5
planet host 4
sound waves 3
chemical composition 3
spectral line 3

Important Words

  1. atmosphere
  2. candidates
  3. cases
  4. confirm
  5. decay
  6. element
  7. explain
  8. extrasolar
  9. future
  10. hard
  11. heavy
  12. hope
  13. impossible
  14. instance
  15. interesting
  16. job
  17. million
  18. natural
  19. observe
  20. planets
  21. project
  22. put
  23. radioactive
  24. reviewing
  25. spectra
  26. star
  27. stars
  28. suddenly
  29. technetium
  30. time
  31. ways
  32. working
  33. years