The fastest known star is hurtling around the Milky Way’s black hole

Astrophysicists have spotted the fastest known star racing around the black hole at the center of the Milky Way. Dubbed S4716, the star completes one orbit around the supermassive black hole Sagittarius A* (Sgr A*) in just about four years.

That means the star is traveling at an incredibly high speed of about 29 million km/h, or nearly 5,000 miles per second. During this rapid orbit of Sagittarius A*, which is estimated to be 14.6 million miles (23.5 million kilometers) in diameter, S4716 will come within as close as 92 million miles (150 million kilometers) of the supermassive black hole.