A team of space scientists with the Chinese Academy of Sciences, at both the Purple Mountain Observatory and the National Astronomical Observatories, has found that the traditional view of the Milky Way galaxy as having four arms is not correct. In their paper published in The Astrophysical Journal, the group describes their analysis of multiple sources of data in an attempt to gain a true shape of the Milky Way.
Click here for original story, New measurements suggest rethinking the shape of the Milky Way galaxy
Source: Phys.org