Dancing ribbon in the polar sky

Auroral forms never cease to surprise us. This is a particularly spectacular example of auroral arc exhibiting so-called folds, which are mesoscale features in the auroral structures having a characteristic size of a few tens of kilometres and a lifetime of a couple of minutes at most. Their formation mechanism remains elusive, and ongoing collaborations between researchers and citizen scientists contribute to shed light on the mysteries of the dancing polar lights (see the ARCTICS‌ Handbook and Field Guide for Citizen Science, https://doi.org/10.5281/zenodo.13931939)