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News for Norther Colorado and the world

Tuesday, October 21, 2014

Posts Tagged ‘cosmic year’

Earthsky Tonight – Jan 4, 2010: Sun moves toward

Earthsky Tonight – Jan 4, 2010: Sun moves toward star Vega

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org An Australia visitor wrote, I seek to find out what speed our sun is traveling at and also how many years does it take to circumnavigate the galaxy? Our Milky Way galaxy is a collection of several hundred billion stars. It has an estimated diameter of 100,000 light-years. Our sun does indeed circumnavigate the Milky Way galaxy. In space, everything moves. There are various estimates for the speed ... Full Story

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