A group of astronomers led by Crystal Martin and Stephanie Ho of the University of California, Santa Barbara, has discovered a dizzying cosmic choreography among typical star-forming galaxies; their cool halo gas appears to be in step with the galactic disks, spinning in the same direction.
![](https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2019/coolhalogasc.jpg)
Source:
https://phys.org/news/2019-06-cool-halo-gas-caught-galactic.html