Carl (himynameisrohitsingh)

Race #4555

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Official speed 123.52 wpm (34.49 seconds elapsed during race)
Race Start July 2, 2019 10:28:40am UTC
Race Finish July 2, 2019 10:29:14am UTC
Outcome No win (1 of 1)
Accuracy 99.0%
Points 119.41
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.