(Credit: NASA/JPL-Caltech/UCLA)
A star, Zeta Ophiuchi, is flung from it's companion. You can see a brilliant bow shock in the above picture.
ScienceDaily (Jan. 24, 2011) — A massive star flung away from its former companion is plowing through space dust. The result is a brilliant bow shock, seen as a yellow arc in a new image from NASA's Wide-field Infrared Survey Explorer, or WISE.