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. academic.oup.com Submitted by Wagamaga t3_125nz7n on March 29, 2023 at 1:22 PM in science 108 comments 929
eatabean t1_je8w9w0 wrote on March 30, 2023 at 7:23 AM The abstract says "outside the local universe..." What is considered to be the boundary of the local universe? Permalink 1
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