No one has ever witnessed the complete evolution of any star from birth to death. Stars take a very long time - millions, billions, even trillions of years - to evolve. Yet in less than a century, astronomers have developed a comprehensive theory of stellar evolution that is one of the best-tested in all of astronomy.
| Game | Time | WPM | Accuracy |
|---|---|---|---|
| 73091 | 2017-04-08 04:27:38 | 125.27 | 88% |
| 72558 | 2017-04-04 14:36:17 | 102.54 | 95% |