eiko (eikomaniac)

Race #8531

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Official speed 156.69 wpm (27.19 seconds elapsed during race)
Race Start December 15, 2020 3:29:21am UTC
Race Finish December 15, 2020 3:29:48am UTC
Outcome No win (2 of 4)
Opponents 1. chakk (208.83 wpm)
Accuracy 97.0%
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.