NGC 720  (SDSS e Chandra)
NASA
<a rel="nofollow" class="external free" href="https://heasarc.gsfc.nasa.gov/Images/objects/heapow/normal_galaxies/ngc720_chandra.jpg">https://heasarc.gsfc.nasa.gov/Images/objects/heapow/normal_galaxies/ngc720_chandra.jpg</a>