Mars has a diameter that is only a little more than half that of Earth. Surface gravity on Mars should therefore be a little more than half that of Earth, assuming that Mars and Earth
When a superconductor is put close to a strong magnet, it will lock into the position where it has been put. It will neither fall nor rise. It will not slide off to the side.
It was not until about 4500 years ago that humans first gave a name to the color blue. The first ones to do so were the Egyptians who knew how to produce blue dye.