This is a combined radio/optical image of the powerful radio galaxy PKS 2356-61 featured on our outreach pages. The radio emission – measure with the Australia Telecope Compact Array (ATCA) – is shown in red, superimposed on the optical image of the field (blue). The galaxy itself is an elliptical, visible in the centre of the image at a redshift of z = 0.1.

Image credit: Koekemoer, Schilizzi, Bicknell & Ekers