Home > Astronomy, Dark Energy & Matter, General Astronomy, Milky Way > Mass Of Dark Matter Revealed By Precise Measurements Of The Galaxy

Mass Of Dark Matter Revealed By Precise Measurements Of The Galaxy


A research team, led by Associate Professor Mareki Honma from the National Astronomical Observatory of Japan (NAOJ), has succeeded in precisely determining the astronomical yardstick for the Galaxy based upon the precise distance measurements with VERA from NAOJ and other advanced radio telescopes. The new findings are that the distance from the sun to the Galactic center is 26,100 light-years, and that the Galactic rotation velocity in the solar system is 240km/s.

The Galactic rotation velocity from this research is higher than that of previously known (220km/s). This results in the conclusion that the mass of the Galaxy, especially that of dark matter, is about 20% larger than what has been previously considered.

Full Story: http://www.nao.ac.jp/E/release/2012/10/03/mass-of-dark-matter-revealed-by-precise-measurements-of-the-galaxy.html

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