How do we determine the mass of our Milky Way galaxy? One way is to look at the trails of stars lost by globular clusters.
The Inbetweeners
Yesterday I mentioned the possibility that a mid-sized black hole might explain why the Trapezium cluster is gravitationally bound. If such an black hole were discovered it would be a really big deal.
Hype It Up
Here’s a headline for you: Physicists find black holes in globular star clusters, upsetting 40 years of theory This story (and others with similar titles) has been making the rounds of science fans. So how does this upset 40 years of theory? It doesn’t.