In the paper, a team of theorists known as BMW present a state-of-the-art supercomputer calculation of the most uncertain term that goes into the standard model prediction of the muon’s magnetic moment.

Hawking and others sought to describe matter in and around black holes using quantum theory, but they continued to describe gravity using Einstein’s classical theory—a hybrid approach that physicists call “semiclassical.” Although the approach predicted new effects at the perimeter of the hole, the interior remained strictly sealed off.

Illustration: Samuel Velasco/Quanta Magazine, Virgo/Frank Elavsky, Aaron Geller/NorthwesternAlas, the flirtation with primordial black holes soured in 2017, after a paper by Yacine Ali-Haïmoud, an astrophysicist at New York University who had previously been on the optimistic Kamionkowski team, examined how this type of black hole should affect LIGO’s detection rate.

More vaccines enter Phase III trials, researchers continue to learn about the long-term impacts of Covid-19, and risk calculation becomes increasingly difficult as the country reopens.New tools aim to help you calculate risk as cases rise and the country reopens.