Arnel II (agujathis)

Race #1075

View Pit Stop page for race #1075 by agujathisGhost race

View profile for Arnel II (agujathis)

Official speed 59.47 wpm (71.63 seconds elapsed during race)
Race Start January 9, 2018 11:49:04am UTC
Race Finish January 9, 2018 11:50:16am UTC
Outcome Win (1 of 3)
Accuracy 94.0%
Points 57.48
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.