Joshua (cptnarwhalrus)

Race #2897

View Pit Stop page for race #2897 by cptnarwhalrusGhost race

View profile for Joshua (cptnarwhalrus)

Official speed 97.00 wpm (43.92 seconds elapsed during race)
Race Start October 30, 2018 11:36:55pm UTC
Race Finish October 30, 2018 11:37:39pm UTC
Outcome No win (2 of 5)
Accuracy 97.0%
Points 93.77
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.