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6 results for beta.nsf.gov:

afrothunder1987 t1_je5tkye wrote

Reply to Ultramassive black hole over 30 billion times mass of our sun has been spotted. The discovery had been made possible thanks to a phenomenon known as gravitational lensing — the first time a black hole has been spotted in such a way. by Wagamaga

center of the Milky Way is **4.3 million** times the mass of the sun. https://beta.nsf.gov/news/astronomers-confront-massive-black-hole-heart At 30 billion times the mass of the sun this thing is….. big Ultra massive black holes like

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Andromeda321 OP t1_je9p2rd wrote

Reply to Gaia discovers a new family of black holes: astronomers studied the orbits of stars and noticed that some of them wobbled on the sky, as if they were gravitationally influenced by massive objects. No light could be found using several telescopes, leaving only one possibility: black holes. by Andromeda321

Gaia BH1. This discovery happened a few months ago ([press release if you missed it then](https://beta.nsf.gov/news/astronomers-discover-closest-black-hole-earth)), and that one happens to be the *closest* black hole to Earth that we know

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