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So in brushless motor the outside part with the magnets is the part that rotates? is that way it's brushless? You don't need to supply electrify to the part that moves?

Or do I have this all wrong?

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Exactly, here is a video that explains it:

https://www.youtube.com/watch?v=bCEiOnuODac

Compared to brushed-motors they can be more powerful for the same weight (which is why they are popular in the RC world), quieter, last longer, and produce less EM interference.

The downside being they need powerful rare earth permanent magnets to work, making their construction more expensive than induction or brushed universal motors.

In a brushless DC motor, the rotor is a magnet, and the stator is a series of electromagnets that can be powered independently, yes. But the rotor is still usually at the center. You're dead right on why it can be brushless - the bit that moves is the permanent magnet. One other important difference is that the coils need to be controlled by a computer of some sort to get the timing right to make a rotating magnetic field and keep the magnet spinning.

And just for reference, at least in the hobby community, these are called in-runners and out-runners. An in-runner has the rotor on the inside and just a shaft that sticks out; an out-runner has the stator on the inside and the outer body of the motor rotates.

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