Matthew (d3f1n3d)

Race #1525

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Official speed 94.21 wpm (45.22 seconds elapsed during race)
Race Start March 4, 2017 5:59:19am UTC
Race Finish March 4, 2017 6:00:04am UTC
Outcome No win (4 of 4)
Opponents 2. get_a_lif3 (100.39 wpm)
3. ivortso (98.69 wpm)
Accuracy 98.0%
Points 0.00
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.