Brian (ace213)

Race #1714

View Pit Stop page for race #1714 by ace213Ghost race

View profile for Brian (ace213)

Official speed 86.39 wpm (49.31 seconds elapsed during race)
Race Start February 2, 2018 9:35:35pm UTC
Race Finish February 2, 2018 9:36:24pm UTC
Outcome Win (1 of 5)
Opponents 5. jason02 (52.47 wpm)
Accuracy 97.0%
Points 83.51
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.