Some galaxies are closer friends than others. While many live their own separate, solitary lives, others stray a little too close to a near neighbor and take their friendship even deeper.
![](https://scx1.b-cdn.net/csz/news/tmb/2019/hubbledetect.jpg)
Source:
https://phys.org/news/2019-12-image-hubble-dynamic-galactic-duo.html