"Pattern speeds in the Milky Way" | The sun is one of over 100 billion stars in the Milky Way galaxy |
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"Gas dynamics in the Milky Way: second pattern speed and large-scale morphology" |
"Discovery of HE 1523-0901, a Strongly r-Process-enhanced Metal-poor Star with Detected Uranium".
32009 , [ "Monitoring Stellar Orbits Around the Massive Black Hole in the Galactic Center"] in German , Astroph | It is about 25,000 light-years from the center of the galaxy, and it revolves around the galactic center once about every 250 million years |
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