I mentioned a while back that Germany's Wendelstein 7-X Stellerator was about to go on with their tests. One of the most novel aspect of this fusion machine is the complex topology of its magnetic field.
We now have a report that confirms the topology of this magnetic field, with an agreement of better than 1:100,000. The field lines that they saw as shown in Fig. 2 of the paper is astounding and science-fictiony!
Well done, people!