lunedì 22 febbraio 2016

NYT Science: A Black Hole That Has Stopped Swallowing Stars

A Black Hole That Has Stopped Swallowing Stars
By NICHOLAS ST. FLEUR

At the core of a galaxy some 300 million light-years away is a supermassive, inactive black hole that is about 21 billion times the size of the sun.

Published: February 22, 2016 at 06:00AM

via NYT Science http://ift.tt/1KE06Ip