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

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

Astrophysicists have discovered the fastest known star orbiting the black hole at the center of the Milky Way. The star, designated S4716, completes an orbit around the supermassive black hole Sagittarius A* (Sgr A*) in just four years.

This means the star is moving at incredibly fast speeds of around 18 million mph (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 km) in diameter, S4716 comes within 92 million miles (150 million km) of the supermassive black hole. .

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