Isaac (im595126)

Race #1205

View Pit Stop page for race #1205 by im595126Ghost race

View profile for Isaac (im595126)

Official speed 73.66 wpm (57.83 seconds elapsed during race)
Race Start March 22, 2018 6:41:42am UTC
Race Finish March 22, 2018 6:42:40am UTC
Outcome Win (1 of 3)
Accuracy 95.0%
Points 71.20
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.