This mosaic shows 18 of the 19 quasars observed by an international team of astronomers, led by the ETH Zurich, Switzerland. Each observed quasar is surrounded by a bright gaseous halo. It is the first time that a survey of quasars shows such bright halos around all of the observed quasars.
The discovery was made using the MUSE instrument at ESO’s Very Large Telescope.
ESO/Borisova et al.
CC BY 4.0
<a rel="nofollow" class="external free" href="http://www.eso.org/public/images/eso1638a/">http://www.eso.org/public/images/eso1638a/</a>