Astronomers have spotted a rare "'missing link"' black hole, and it's lurking right in the center of our galaxy.
The IRS 13 star cluster has long been a puzzle for astronomers. Located just a tenth of a light-year from the heart of our Milky Way galaxy where the Sagittarius A* supermassive black hole resides, the proximity of the cluster to the enormous black hole's powerful gravitational pull means that it shouldn't have much structure.
