Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the Milky Way galaxy, such as its gravitational potential and the distribution of matter. Now astronomers from China have made a large-volume search for hypervelocity stars by utilizi ng a special class of stars known for their distinct, regular, predictable pulsation behavior that makes them useful as distance indicators. ...read more read less