Spider Ballooning and Glowing Discs in Verdon-sur-Mer

Summary

In October 2017, two witnesses on a beach in Gironde noticed strange white filaments falling from a clear sky. One of them collected a few to examine. At the same time, they observed two glowing discs moving silently and rapidly side by side. The filaments continued to fall for a few minutes before everything returned to normal. A later analysis confirmed that the filaments were spider silk, a phenomenon known as ballooning. Spiders use these threads to travel through the air, carried by the wind. The witnesses' account was consistent and credible, aligning perfectly with this explanation.

The initial hypothesis was strengthened when one of the witnesses submitted a sample of the filaments to CNES, which confirmed they were silk fibers mixed with iron oxide particles. This turned the case into a clear example of spider ballooning. Although initially classified as unexplained, the physical evidence allowed for a reclassification as a resolved case. This incident shows how seemingly inexplicable phenomena can often have natural, albeit unusual, explanations when thoroughly investigated.