Ernest (kevinkrish)

Race #7428

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Official speed 75.08 wpm (56.74 seconds elapsed during race)
Race Start October 15, 2018 2:01:58pm UTC
Race Finish October 15, 2018 2:02:54pm UTC
Outcome Win (1 of 5)
Opponents 2. dmack98 (70.37 wpm)
Accuracy 98.0%
Points 72.58
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.