Video, uploaded to YouTube, shows more than a dozen UFO balls of light are seen moving slowly through the night sky.
It was filmed by a shocked family in Toronto, Canada.
A man can be heard saying: “It must have been something that fell from Space.
“That’s a fireball or something.
“Holy s***. They’re pretty intense.”
Then coloured orbs appear to fill the screen.
The video has chalked up thousands of views after it was shared online.
A girl in the footage says: “They’re changing colour.
“That is the weirdest s*** I’ve ever seen.”
Viewers have been speculating as to what exactly the mystery glowing balls may be.
One was not convinced of alien life, saying: “You do realise these are Chinese lanterns right?”
Another viewer was not so sure, replying: “Then why are they in a triangle formation?”