At the National University of Mexico, astrophysicists Gustavo Joy Khoury and Sergio Mendoza succeeded in detecting a peculiar pulse.
The scientists discovered that this pulse emanates from the massive black hole at the center of the Milky Way galaxy, known as Sagittarius A.
The researchers began to analyze this pulse and were surprised to find that it consisted of fluctuations in the flow of gamma rays every 76 minutes, resembling radio and X-ray waves. These waves consistently fluctuate on a time scale of about 70 minutes.
However, black holes cannot emit any radiations, so scientists concluded that this phenomenon indicates the presence of an orbital motion of something rotating wildly around the black hole.