- A recent study tracking a star orbiting Sagittarius A*, the supermassive black hole at the Milky Way’s center, confirms Einstein’s general relativity predictions.
- The star’s motion exhibits Schwarzschild precession, a phenomenon where its elliptical orbit rotates over time, supporting the century-old prediction of general relativity.
- The observational breakthrough strengthens the belief that Sagittarius A* is a supermassive black hole, estimated at 4 million times the mass of the sun.
- The study, conducted by the GRAVITY collaboration using the Very Large Telescope in Chile, spanned 27 years, making over 330 measurements of the star’s position and velocity.
- The precise agreement between observations and general relativity predictions allows researchers to impose constraints on the presence of invisible material around Sagittarius A*, enhancing our understanding of supermassive black hole formation.