An (noswear999)

Race #2156

View Pit Stop page for race #2156 by noswear999Ghost race

View profile for An (noswear999)

Official speed 78.17 wpm (54.50 seconds elapsed during race)
Race Start September 29, 2020 6:52:31am UTC
Race Finish September 29, 2020 6:53:26am UTC
Outcome No win (2 of 5)
Opponents 1. hoagnnam75 (81.08 wpm)
5. segunobunaga (61.79 wpm)
Accuracy 96.0%
Points 75.56
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.