In 1963, the mathematician Roy Kerr found a solution to Einstein’s equations that precisely described the spacetime outside what we now call a rotating black hole. (The term wouldn’t be coined for a ...
Tonan Kamata, center, and Ryuhei Uehara, right, of the Japan Advanced Institute of Science and Technology (JAIST) and Jin Akiyama, a professor emeritus at the Tokyo University of Science, are seen in ...