B4CK (ayeyuhskuh)

Race #12257

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Official speed 159.29 wpm (26.74 seconds elapsed during race)
Race Start March 13, 2020 11:52:40pm UTC
Race Finish March 13, 2020 11:53:07pm UTC
Outcome Win (1 of 3)
Accuracy 100.0%
Points 153.98
Text #3622418 (Length: 355 characters)

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.