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typeracer

Pit Stop
Racer DANIEL (dizo)
Race Number 17690
Date Mon, 30 Jan 2017 12:22:27
Speed 67 WPM Try to beat?
Accuracy 93.7%
Rank 1st place (out of 5)
Opponents dung_si_thoi (4th place) rishabhrai (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)