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 |
---|---|---|---|
3569 | 2017-06-29 16:19:57 | 47.98 | 95% |
3268 | 2017-06-22 17:07:14 | 42.85 | 94% |