Runaway stars such as this with a stellar wind that is moving at supersonic velocity through the interstellar medium have their wind confined by a bow shock due to ram pressure.
Alpha Phi Alpha | Sigma Alpha Epsilon | Kappa Alpha Psi | Alpha | Phi Mu Alpha Sinfonia | Pi Kappa Alpha | Alpha Blondy | Piper Alpha | Alpha Delta Phi | Alpha Centauri | alpha | Sigma Alpha Mu | Kappa Alpha Theta | ISO 3166-1 alpha-2 | Alpha Video | Alpha Kappa Alpha | Alpha Epsilon Pi | Sony Alpha | Kappa Alpha Society | Zeta Tau Alpha | Sigma Alpha Iota | Sid Meier's Alpha Centauri | Lambda Chi Alpha | Kappa Alpha Order | Alpha TV | Alpha Group | Alpha Gamma Rho | Alpha Bank | Wolfram Alpha | TGF alpha |