An international team of researchers has used sophisticated models to calculate the mass of the Milky Way. They have written a paper describing their efforts and results, and have posted it on the arXiv preprint server.
![](https://scx1.b-cdn.net/csz/news/tmb/2018/1-milkyway.jpg)
Source:
https://phys.org/news/2019-12-mass-milky-billion-sun.html