From the March 2009 issue

How many black holes have astronomers discovered in our Milky Way Galaxy? How do they find a black hole?

Sayed Alawi, Anaheim, California
By | Published: March 23, 2009 | Last updated on May 18, 2023
To date, astronomers have found 19 confirmed black holes and an additional 18 potential black holes, for a total of 37.