Why can't we see polarized light from colliding stellar winds?

Colliding winds from massive stars create turbulent regions that accelerate particles to near light speed, producing radio synchrotron emission that should be strongly polarized. VLA observations of two well-studied systems found polarization signals below 1%—far lower than expected. The culprits: tangled magnetic fields, depolarization from spinning electrons, and an overlooked thermal fog that drowns out the polarized signal.