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→The Star: Flows better on right side
Vega is considered a very young star, and is estimated to be only some 350 million years old<ref>http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1988A%26AS...76..411M</ref>. Because it is far larger and hotter then our Sun, Vega will exhaust its core hydrogen only after another 650 million years or so, and leaving the main sequence turning into a red giant or a Cepheid variable.
Vega is considered a very young star, and is estimated to be only some 350 million years old<ref>http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1988A%26AS...76..411M</ref>. Because it is far larger and hotter then our Sun, Vega will exhaust its core hydrogen only after another 650 million years or so, and leaving the main sequence turning into a red giant or a Cepheid variable.
[[Image:Size Vega.png|thumb|left|250px|illustration of the size of Vega compared to the sun, note its elliptical shape due to its rotation speed.]]
[[Image:Size Vega.png|thumb|right|250px|illustration of the size of Vega compared to the sun, note its elliptical shape due to its rotation speed.]]
Vega rotates so fast that it only takes some 12.5 hours to complete one rotation, in comparison the Sun which takes 25.4 days to complete one rotation. This rotation is so fast that observations suggest that the star is rotating at some 91 percent of the angular velocity needed to cause the star to physically fly apart. Vega is thus 23 percent wider along its equator than at its poles, as well as some 2300K cooler<ref>http://www.noao.edu/outreach/press/pr06/pr0603.html</ref>. Here on Earth, Vega is seen as pole on (looking directly at its pole).
Vega rotates so fast that it only takes some 12.5 hours to complete one rotation, in comparison the Sun which takes 25.4 days to complete one rotation. This rotation is so fast that observations suggest that the star is rotating at some 91 percent of the angular velocity needed to cause the star to physically fly apart. Vega is thus 23 percent wider along its equator than at its poles, as well as some 2300K cooler<ref>http://www.noao.edu/outreach/press/pr06/pr0603.html</ref>. Here on Earth, Vega is seen as pole on (looking directly at its pole).