(oartalk)

Race #3306

View Pit Stop page for race #3306 by oartalkGhost race

View profile for (oartalk)

Official speed 45.03 wpm (94.60 seconds elapsed during race)
Race Start December 1, 2019 5:26:35pm UTC
Race Finish December 1, 2019 5:28:09pm UTC
Outcome No win (3 of 4)
Accuracy 95.0%
Points 43.53
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.