Researchers observed magnetic fields in the Magellanic Cloud.

"Magnetic fields have been detected for the first time in three massive stars in the Large and Small Magellanic Clouds. This discovery is significant as it offers insights into the role of magnetism in star formation and evolution, particularly in galaxies with young stellar populations. Credit: SciTechDaily.com" (ScitechDaily, First Detection of Magnetism in Massive Stars Beyond Our Galaxy)

First time in history. Researchers observed a massive star's magnetic field outside our galaxy. The new observations are made from stars. They are located in small and large Magellanic Clouds. Those dwarf galaxies are smaller and cooler than the Milky Way. So those magnetic fields were not located outside the galaxy. The Magellanic Clouds can tell us about the chemical environment in other galaxies. 

And they can also tell how often there are planetary systems in dwarf galaxies. Dwarf galaxies are like Milky Way and other galaxies, and there should be solar systems. But the environment in those lightweight galaxies is somehow different than in the Milky Way. The plasma density in those galaxies is lower. And there are fewer stars than in the Milky Way. And that thing can tell something about the possible solar systems in other galaxies. Magellanic Clouds can also tell how much the galaxy's size affects to the planet's formations. It's possible that in some star clusters, there are no rocky planets. But lots of gas giants. 

Researchers hope that those observations tell about magnetic interaction with its environment. In galaxies, all magnetic fields face the counter forces, but outside galaxies those counter forces are weak. In galaxies, there is a plasma bubble around all stars. Also, the impact wave between solar wind and particles and electromagnetic radiation from other stars form the impact wave. 

These impact waves do not exist outside the galaxy if the distance between stars is high enough. There is also lower-density plasma where particles move faster than in galaxies. But then otherwise many stars outside the galaxy are bigger. And in star clusters, the particle speed is higher and stars in those clusters are larger and hotter than stars in galaxies. 

https://scitechdaily.com/first-detection-of-magnetism-in-massive-stars-beyond-our-galaxy/

https://en.wikipedia.org/wiki/Magellanic_Clouds