The four brightest member stars of the Hyades are all red giants that began life as A-type stars and have now evolved off the main sequence. All are within a few light years of each other. Their Bayer designations are Gamma, Delta, Epsilon, and Theta Tauri. They form a pattern which was identified as the head of Taurus the Bull. Epsilon Tauri, also known as Ain (the "Bull's Eye"), harbours at least one gas giant planet.