D D (ddov)

Race #568

View Pit Stop page for race #568 by ddovGhost race

View profile for D D (ddov)

Official speed 78.49 wpm (54.27 seconds elapsed during race)
Race Start May 4, 2017 2:22:58pm UTC
Race Finish May 4, 2017 2:23:52pm UTC
Outcome Win (1 of 5)
Opponents 2. vetlebg (77.02 wpm)
3. stimo (71.36 wpm)
4. jugglerilluminati (65.56 wpm)
Accuracy 97.0%
Points 0.00
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.