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 |
---|---|---|---|
2613 | 2017-06-20 15:54:32 | 53.77 | 96% |
2519 | 2017-06-19 16:51:06 | 56.83 | 96% |