Category Archives: General Relativity

Can a toroidal black hole exist?

Many years ago, a brilliant Berkeley mathematician Richard Borcherds started a blog on math. I have no doubt he has so many interesting things to share about math. Regrettably though, for whatever reason, it didn’t last long. In one of … Continue reading

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The First Image of a Supermassive Black Hole at the Heart of Milky Way Galaxy

The first image of a supermassive black hole was obtained back in 2019 by the Event Horizon Telescope (ETH) Collaboration. The supermassive black hole, called M87*, is located at the center of  a distant galaxy Messier 87. It is about … Continue reading

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