First Astronomy

First quasar quartet discovered

Group of bright objects in early universe lights up an infant galaxy cluster

four quasars

QUADRUPLETS  Four quasars (marked with arrows) lie within a nebula (blue) that stretches 1 million light-years across in this false color image.

J.F. Hennawi and F. Arrigoni-Battaia/MPIA

By Christopher Crockett

- More than 2 years ago

A foursome of quasars on the far side of the universe heralds the birth of a massive cluster of galaxies, researchers suggest in the May 15 Science.