Imagine a ferrofluid, you could wiggle around a space via electro magnetic forces. You could create parts of a "mirror" at locations on demand, and sythesize th

Imagine a ferrofluid, you could wiggle around a space via electro magnetic forces. You could create parts of a "mirror" at locations on demand, and sythesize the reflected light into a whole picture, without ever needing a huge, ground mirror. The whole optical body is only ever needed for us and parallelistic sensors.