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typeracer

Pit Stop
Racer John (johnsmithed)
Race Number 43
Date Fri, 22 Sep 2017 22:44:46
Speed 47 WPM Try to beat?
Accuracy 98.9%
Rank 4th place (out of 5)
Opponents reneguillen (3rd place) same_greene (5th 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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