The jaw-dropping video is said to have been filmed in the night sky above Engenho Novo, in Rio de Janeiro, Brazil, on Thursday.
The footage has been sent to the US-based Mutual UFO Network (MUFON) which is analysing the video.
MUFON is the world's largest organisation dedicated to UFO and alien research, and maintains a database of sightings.
Yesterday it was sent the footage with a witness report.
To read more and view the video, click here.