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typeracer

Pit Stop
Racer Shashy (shashy)
Race Number 71
Date Fri, 10 Mar 2017 18:34:56
Speed 73 WPM Try to beat?
Accuracy 85.6%
Rank 2nd place (out of 5)
Opponents dizo (4th place) subversify (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)