Circular luminous phenomenon seen across several French regions

Summary

Between 19:00 and 19:30 on 13 December 1977, witnesses in various parts of France saw a circular luminous shape moving swiftly from east to west, trailing a wake. Each observation lasted only seconds and no sound was heard. The consistent descriptions from multiple independent observers point to the characteristics of a body entering the Earth's atmosphere. GEIPAN classified the case as B, regarding the natural explanation as credible.