Mark Jonathan (markthespark458)

Race #140

View Pit Stop page for race #140 by markthespark458Ghost race

View profile for Mark Jonathan (markthespark458)

Official speed 72.70 wpm (58.60 seconds elapsed during race)
Race Start October 4, 2018 11:29:56am UTC
Race Finish October 4, 2018 11:30:54am UTC
Outcome No win (4 of 5)
Opponents 1. jjz03 (80.90 wpm)
Accuracy 96.0%
Points 70.28
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.