Supermassive black holes only 300 light years apart

NASA telescopes showed that two bright lights were actually enormous black holes

Image: NASA

Two supermassive black holes spotted by NASA telescopes are only 300 light years apart—unnervingly close in galactic terms. The celestial drainholes registered as spikes of bright light and were then imaged by NASA's Chandra X-ray Observatory and the Hubble Space Telescope, which revealed a darker truth within.

Astronomers serendipitously foun…