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Racer takusto_ii (tonoci)
Race Number 488
Date Tue, 18 Dec 2018 19:47:38 +0000
Speed 97 WPM Try to beat?
Accuracy 97.7%
Rank 1st place (out of 5)
Opponents jernjej (3rd place) myke_lytoris (4th place) shadowwalker3 (2nd 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.
Astronomy: A Beginner's Guide to the Universe (7th Edition) (book) by Eric Chaisson, Steve McMillan (see stats)

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