Star’s extreme proximity to Sagittarius A* means it could open new window onto black hole’s fundamental properties Astronomers have detected the fastest known star in the Milky Way, hurtling around the supermassive black hole at the heart of the galaxy. The star, called S301, travels at about 25,000km (15,500 miles) per second, 100,000 times faster than a commercial plane. It is also the closest known star to the Milky Way’s central black hole, Sagittarius A*, approaching it around the distance of Saturn to the Sun. Continue reading... from The Guardian https://ift.tt/NGtUWuq via IFTTT
Over past three decades. obesity rates increased fourfold among children and doubled among adults More than 1 billion people worldwide are now living with obesity, with rates among children increasing fourfold across a 32-year period, according to new research. Analysis of the weight and height measurements of over 220 million people from more than 190 countries shows how body mass index (BMI) changed across the world between 1990 and 2022. Continue reading... from The Guardian https://ift.tt/l9ORujd via IFTTT