The alerts are propagated on Facebook since many users saw a bright ball in the sky about 21 pm on Sunday, September 29. Some even immediately thought of an alien presence. Further to a satellite ...
Contacted for an official version, the meteorological station of Vacoas could only confirm a light ball was seen in the sky. This is Grand Bay that the phenomenon was most visible and gradually vanished.
How to explain this phenomenon? The answer may be on the side of astronomy
The Beehive Cluster, also known as Praesepe (Latin for "manger"), M44, NGC 2632, or Cr 189, is an open cluster in the constellation Cancer. It is one of the nearest open clusters to the Solar System, and it contains a larger star population than most other nearby clusters. Under dark skies the Beehive Cluster looks like a nebulous object to the naked eye; thus it has been known since ancient times. (Wiki)