This composite X-ray (blue)/radio (pink) image of the galaxy cluster Abell 400 shows radio jets immersed in a vast cloud of multimillion degree X-ray emitting gas that pervades the cluster. The jets emanate from the vicinity of two supermassive black holes (bright spots in the image). These black holes are in the dumbbell galaxy <a href="https://en.wikipedia.org/wiki/NGC_1128" class="extiw" title="w:NGC 1128">NGC 1128</a>, which has produced the giant radio source, <a href="https://en.wikipedia.org/wiki/3C_75" class="extiw" title="w:3C 75">3C 75</a>.
X-ray: NASA/ĈC/AIfA/D.Hudson &amp; T.Reiprich et al.; Radio: NRAO/VLA/NRL
2006-04-06
<a rel="nofollow" class="external free" href="http://chandra.cfa.harvard.edu/photo/2006/a400/">http://chandra.cfa.harvard.edu/photo/2006/a400/</a> (<a rel="nofollow" class="external text" href="http://chandra.harvard.edu/photo/2006/a400/a400.tif">image link</a>); see also <a rel="nofollow" class="external free" href="http://apod.nasa.gov/apod/ap081109.html">http://apod.nasa.gov/apod/ap081109.html</a> and <a rel="nofollow" class="external free" href="http://apod.nasa.gov/apod/ap100314.html">http://apod.nasa.gov/apod/ap100314.html</a>