White sphere seen in Fontenay-sous-Bois

Summary

On June 3, 2010, a witness in Fontenay-sous-Bois observed a white sphere for about ten seconds. The small, silent object was flying above buildings and quickly disappeared behind urban structures. Despite the detailed description provided by the witness, no other testimonies were collected and no formal report was filed. The north-south trajectory of the object aligns with the light northerly wind recorded at the time, suggesting it could have been a weather balloon or another lighter-than-air object. However, the description and context do not rule out the possibility of an unusual phenomenon.