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December 13 2012

Vega Older Than Thought, Astronomers Say


According to an international group of astronomers led by Dr Peter Tuthill of the Sydney Institute for Astronomy, Vega – the brightest star in the constellation Lyra located about 25 light-years away – may be more than 200 million years older than previously thought.

The group used a tool called the Michigan Infrared Combiner and installed at the Georgia State Center for High Angular Resolution Astronomy Array on Mt. Wilson in California to estimate the age of Vega by precisely measuring its spin speed. The tool collects the light gathered by six telescopes to make it appear to be coming through one that’s 100 times larger than NASA’s Hubble Space Telescope.

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