Astronomy’s Stacy McGaugh comments on Milky Way galaxy

The Milky Way may be missing a trillion suns’ worth of mass
Scientific AmericanStacy McGaugh, astronomy professor at the College of Arts and Sciences, commented in a story about stars in the Milky Way’s outskirts moving slower than once thought, suggesting the galaxy might be much lighter than believed—a shift that would carry profound implications for dark matter. “Let me put it this way,” he said. “If it worked out that way, it would be revolutionary.”