Astrophysicist Helps Map the Milky Way's Four Spiral Arms
Monday, January 5, 2009 - 08:21
in Astronomy & Space
Martin Pohl, an Iowa State University associate professor of physics and astronomy, is part of a research team that developed the first complete map of the Milky Way galaxy's spiral arms. The map shows two prominent, symmetric spiral arms in the inner part of the galaxy. The arms extend into the outer galaxy where they branch into four spiral arms.