⭐️⭐️⭐️ (pbnl2)

Race #17010

View Pit Stop page for race #17010 by pbnl2Ghost race

View profile for ⭐️⭐️⭐️ (pbnl2)

Official speed 135.79 wpm (31.37 seconds elapsed during race)
Race Start July 8, 2020 9:35:47am UTC
Race Finish July 8, 2020 9:36:18am UTC
Outcome No win (2 of 4)
Accuracy 99.0%
Points 131.26
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.