50,000 Suns --The Mirror Symmetry & Giant Molecular Clouds of the Milky Way

50,000 Suns --The Mirror Symmetry & Giant Molecular Clouds of the Milky Way: The discovery last year of a vast section of a spiral, star-forming arm at the Milky Way’s outskirts about 49,000 light-years from the galactic center, showed the galaxy to have a rare, beautiful symmetry -- one half of the Milky...