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typeracer

Pit Stop
Racer ja (meis2pro4u)
Race Number 51
Date Fri, 10 Nov 2017 15:08:58
Speed 38 WPM Try to beat?
Accuracy 95%
Rank 3rd place (out of 4)
Opponents vigilante434 (2nd place) xrini (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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