Magnetic propulsion

I wondered if anyone out there thinks it’s possible that these UFOs people have seen might utilize a magnetic field propulsion system? I watch a lot of shows, and though I have never seen anything I often consider the things others have seen. Like soundless movements with the ability to hover and turn at sharp angles. Sounds like magnetic fields to me. Maybe fueled by a nuclear energy source. I think that would be soundless. I’m not a physics wiz so I’m not sure if space has any magnetic fields. Just sort of wanted to bounce this off someone out there who has the brain power to work this idea through.