The study used the European Space Agency's (ESA) XMM-Newton and NASA's NuSTAR telescopes to see light from behind a black hole for the first time ever.
The study used the European Space Agency's (ESA) XMM-Newton and NASA's NuSTAR telescopes to see light from behind a black hole for the first time ever.
Extensive ocher use reflects the culture and cognitive abilities of early humans, who inherited an affinity for red from primate..