Dean (biollama112)

Race #4818

View Pit Stop page for race #4818 by biollama112Ghost race

View profile for Dean (biollama112)

Official speed 101.90 wpm (41.81 seconds elapsed during race)
Race Start October 17, 2019 6:43:29am UTC
Race Finish October 17, 2019 6:44:10am UTC
Outcome No win (2 of 4)
Accuracy 96.0%
Points 98.50
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.