A newly found star circles the Milky Way’s central black hole every 8.7 years and passes it at about 25,000 kilometres a second, more than 8 percent of the speed of light, and the pass is so close that its discoverers say there is a fair chance of measuring the hole’s spin within a decade
A faint point of light showed up 15 milliarcseconds northwest of Sagittarius A* in the spring of 2023,…
