From NobelPrize https://twitter.com/NobelPrize on Twitter: The stars orbits are the most convincing evidence yet that a supermassive black hole is hiding in Sagittarius A*. This black hole is estimated to weigh about 4 million solar masses, squeezed into a region no bigger than our solar system. #NobelPrize https://twitter.com/NobelPrize/status/1313427748057223170/photo/1 https://chirp.cooleysekula.net/attachment/68120