Questions for ‘Here’s an easier way to weigh a black hole’
![illustration of a black hole](https://www.snexplores.org/wp-content/uploads/2021/08/081121_lg_blackholedisk_feat-1030x580.jpg)
Astronomers have figured out how to use the disk of hot gas and dust around some black holes (like the one shown in this artist’s illustration) to measure a black hole’s mass.
Mark A. Garlick, Simons Foundation