Saeed (saeedfx)

Race #479

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Official speed 50.90 wpm (83.69 seconds elapsed during race)
Race Start October 25, 2020 10:02:06am UTC
Race Finish October 25, 2020 10:03:29am UTC
Outcome No win (2 of 5)
Opponents 3. piratexx (48.47 wpm)
Accuracy 96.0%
Points 49.20
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.