Despite exceeding its design life in orbit, ESA’s Aeolus mission continues to deliver excellent data. The uses for Aeolus wind data are many, from predicting the weather and improving climate models, to tracking events in near-realtime, such as the recent Hunga Tonga volcanic eruption. The image shows how the ash from the eruption left its mark in Aeolus’ measurements on 15 January 2022. A huge blip, or drop, can be seen in the Aeolus signal over the Tonga region, suggesting the plume of volcanic ash must have reached an altitude above the range that can be detected by Aeolus.