'Comet' Tail of Speeding Star Cluster Solves 100-Year-Old Cosmic Puzzle

<img width="128" height="52" src="https://www.sciencealert.com/images/2024/08/Terzan5Cover2024.jpg" alt="A cluster of bright stars"/>
A scientific first.

https://www.sciencealert.com/comet-tail-of-speeding-star-cluster-solves-100-year-old-cosmic-puzzle