Fast-Moving Star Speeding at 18 Million MPH Circles Around Milky Way's Black Hole in Just 4 Years

Astronomers discovered a brand new star that is orbiting the Milky Way's supermassive black hole center in just four years at a blistering speed of 18 million mph. The star, known as S4716, is the fastest known star and comes as close as 92 million miles to the center of our galaxy.