2.5 ly distant?
Surely you mean 2.5 million light years?
The National Science Foundation’s National Radio Astronomy Observatory has spotted an X-ray source in Andromeda, 2.5 million light-years distant, that it’s tagged as a “micro-quasar” and says is the first discovered beyond the Milky Way. The object, XMMU J004243.6+412519 (love the naming convention), is a black hole with an …