News Astronomy

X-Ray Universe: Quasar’s jet goes the distance

By Ron Cowen

- More than 2 years ago

Photons left over from the birth of the universe appear to have helped generate the longest X ray-emitting jet ever found in a distant galaxy.

X-RAY REVELATIONS.Illustration shows that en route to Earth, X rays from the quasar PKS 1127-145 pass through a galaxy 4 billion light-years away.