Pseudo (psuedo)

Race #149

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Official speed 133.12 wpm (32.00 seconds elapsed during race)
Race Start August 21, 2020 11:03:55pm UTC
Race Finish August 21, 2020 11:04:27pm UTC
Outcome Win (1 of 4)
Accuracy 99.0%
Points 128.68
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.