Astronomers spied a super-sized black hole ejecting plumes of gas every eight days. This black hole is at the center of a galaxy located about a billion light-years away and tips the scales at about 30 million times the mass of our Sun. Ground-based telescopes caught ASASSN-20qc when it flared up in late 2020. A few weeks later Swift and other telescopes observed it in X-rays. Our NICER telescope monitored it for several months afterward, which was when astronomers noticed that the source varies