View Pit Stop page for race #262 by amdhc — Ghost race
View profile for 一个有趣的小车 (amdhc)
| Official speed | 49.03 wpm (86.89 seconds elapsed during race) |
|---|---|
| Race Start | October 18, 2017 5:02:50am UTC |
| Race Finish | October 18, 2017 5:04:16am UTC |
| Outcome | No win (3 of 5) |
| Opponents |
1. siddharthkurnal (60.07 wpm) |
| Accuracy | 94.0% |
| Points | 47.39 |
| 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. |