Kaizer Chiefs assistant coach Khalil Ben Youssef praises super-sub Mfundo Vilakazi The hadal zone, as scientists call it, is located in the ocean trenches, more than 6,000 meters below the surface.
NASA's Chandra and NuSTAR telescopes have teamed up to study a supermassive black hole-powered quasar that could have played a key role in ending the cosmic dark ages.