![]() ![]() ![]() ![]() They also found Vega to have about 2.15 times the mass of the Sun. Reporting in the Astrophysical Journal, Monnier and colleagues determined the star rotates once every 17 hours, rather than once every 12, as previously thought.īy comparison, the Sun's equator rotates far more slowly, about once every 648 hours or 27 days.īased on the new analysis of its rotational speed, the researchers determined Vega to be between 700 and 800 million years old, compared to the Sun's age of 4.567 billion years. Old friend The star Vega is at least two hundred million years older than previously thought, according to a new study.įor thousands of years, scientists have been using Vega as an astronomical yardstick with which to compare other stars and galaxies, as well as develop computer models of stellar life cycles.īut now, new research led by associate professor John Monnier of the University of Michigan, has found Vega is spinning slower than originally estimated, meaning the star is also older. Scientists find 'monster' star, Science Online,.Stars let us see the light, Science Online,.Early stars had a fast spin cycle, Science Online,. ![]()
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