Hmm (sironronron)

Race #1555

View Pit Stop page for race #1555 by sironronronGhost race

View profile for Hmm (sironronron)

Official speed 95.86 wpm (44.44 seconds elapsed during race)
Race Start October 19, 2018 12:25:31pm UTC
Race Finish October 19, 2018 12:26:15pm UTC
Outcome Win (1 of 4)
Accuracy 98.0%
Points 92.66
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.