Look i'll say it in a more detailed post just so you won't think im trollin' you.
here's a paragraph from the wired:
This levitation effect is explained by the Meissner effect, which describes how, when a material makes the transition from its normal to its superconducting state, it actively excludes magnetic fields from its interior, leaving only a thin layer on its surface.
When a material is in its superconducting state — which involves very low temperatures — it is strongly diamagnetic. This means that when a magnetic field is externally applied, it will create an equally opposing magnetic field, locking it in place.
First part it explains to you how magnetism works and how it can levitate that low from the superconductor.
And the second part explains how in dynamic/excessive low levels of temperature that it will create an equally "opposing magnetic field and lock it in place" aka lets you manage it in any way you want, like in that video you can play around with it, basically the only discovery that was significant was the fact that they tested it at lower temperatures and found out you can ultimately create an equally opposing force where in the process you can make it levitate. doesn't take a genius to do that. the only thing they had to do was find out how low do they have to go in temperature so you can create an equal opposing force and levitate it.
the rest is just pure magnetism which we already knew since 5th grade.