NuSTAR Discovers Five Hidden Black Holes

Using NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) space observatory, astronomers have detected X-rays from five supermassive black holes previously clouded from direct view by dust and gas. The scientists pointed NuSTAR at nine candidate supermassive black holes that were thought to be extremely active at the center of galaxies, but where the full extent of [...] —> Read More