First image of two supermassive black holes in a stable orbit.
Quasar OJ287, 5 billion light years away in Cancer. The large black hole is 18 billion solar masses, while the smaller black hole orbiting it is 150 million solar masses. The smaller black hole completes an orbit every 12 years, through the accretion disc of the larger black hole. Some super-nerds figured that it's orbiting at 6% of the speed of light.
https://www.helsinkitimes.fi/themes/themes/science-and-technology/28090-scientists-capture-first-image-of-two-black-holes-in-orbit.html
https://iopscience.iop.org/article/10.3847/1538-4357/ae057e/pdf
Quasar OJ287, 5 billion light years away in Cancer. The large black hole is 18 billion solar masses, while the smaller black hole orbiting it is 150 million solar masses. The smaller black hole completes an orbit every 12 years, through the accretion disc of the larger black hole. Some super-nerds figured that it's orbiting at 6% of the speed of light.
https://www.helsinkitimes.fi/themes/themes/science-and-technology/28090-scientists-capture-first-image-of-two-black-holes-in-orbit.html
https://iopscience.iop.org/article/10.3847/1538-4357/ae057e/pdf