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typeracer

Pit Stop
Racer won (wonboss)
Race Number 239
Date Thu, 9 Nov 2017 16:09:22
Speed 45 WPM Try to beat?
Accuracy 94.6%
Rank 5th place (out of 5)
Opponents antonjobs (2nd place) herffjones (1st place)

Text typed:

If an exoplanet happens to transit its star, we can often determine both its mass and its radius, and hence estimate its density and possibly even its composition. More than 200 transiting hot Jupiters have been measured in this way. But when astronomers calculate their densities the numbers they obtain are generally much lower than predicted by theory.
— (book) by Eric Chaisson, Steve McMillan (see stats)

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