full transcript

## Unscramble the Blue Letters

So what happened? Well, in hindsight we can say that astronomers were making two auxiliary hypotheses, both of which we would now say were incorrect. The first was an assumption about the size of the Earth's orbit. aetsmoonrrs were assuming that the Earth's orbit was large relative to the distance to the stars. tdoay we would draw the picture more like this, this comes from NASA, and you see the Earth's orbit is actually quite salml. In fact, it's actually much smaller even than swohn here. The stellar parallax therefore, is very small and actually very hard to detcet.

## Open Cloze

So what happened? Well, in hindsight we can say that astronomers were making two auxiliary hypotheses, both of which we would now say were incorrect. The first was an assumption about the size of the Earth's orbit. ___________ were assuming that the Earth's orbit was large relative to the distance to the stars. _____ we would draw the picture more like this, this comes from NASA, and you see the Earth's orbit is actually quite _____. In fact, it's actually much smaller even than _____ here. The stellar parallax therefore, is very small and actually very hard to ______.

1. astronomers
2. small
3. detect
4. today
5. shown

## Original Text

So what happened? Well, in hindsight we can say that astronomers were making two auxiliary hypotheses, both of which we would now say were incorrect. The first was an assumption about the size of the Earth's orbit. Astronomers were assuming that the Earth's orbit was large relative to the distance to the stars. Today we would draw the picture more like this, this comes from NASA, and you see the Earth's orbit is actually quite small. In fact, it's actually much smaller even than shown here. The stellar parallax therefore, is very small and actually very hard to detect.

## Frequently Occurring Word Combinations

### ngrams of length 2

collocation frequency
stellar parallax 5
computer simulation 3
greenhouse gases 3
modern automobile 3
climate change 2
scientific claims 2
famous examples 2
ptolemaic system 2
accurate predictions 2
textbook model 2
auxiliary hypotheses 2
copernican model 2
wellington boots 2
physical models 2
dramatic increase 2
scientific knowledge 2
special kind 2
blind trust 2

1. assuming
2. assumption
3. astronomers
4. auxiliary
5. detect
6. distance
7. draw
8. fact
9. happened
10. hard
11. hindsight
12. hypotheses
13. incorrect
14. large
15. making
16. nasa
17. orbit
18. parallax
19. picture
20. relative
21. shown
22. size
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24. smaller
25. stars
26. stellar
27. today