The object at the Milky Way’s center has long been treated as a settled case: a supermassive black hole called Sagittarius A* weighing about four million Suns and anchoring the galaxy’s structure. Now ...

For decades, the motions of stars near the center of our Milky Way Galaxy have been treated as some of the clearest evidence for a supermassive black hole.

A new theoretical proposal argues that the massive object sitting at the center of our galaxy may not be a black hole at all, but rather a dense clump of fermionic dark matter with no event horizon.

Our Milky Way galaxy may not have a supermassive black hole at its center but rather an enormous clump of mysterious dark matter exerting the same gravitational influence, astronomers say. They ...