The launch, on November 15, was the first time a private company had taken astronauts into space and the four Dragon Capsule crew members are being sent on a mission to the International Space Station (ISS).
A woman called Rebecca, who was at the launch in Florida, US, noticed the strange light in her footage and sent it to the sky-watching YouTube channel MrMBB333.
Explaining the footage, the YouTuber says: “Above this cloud, you’re going to see a bright light and it moves.
“It’s like it was waiting on the rocket to get to that certain position.”
As the rocket moves higher in the sky, there is indeed a twinkling object.
The flickering light appears to move to the left of the frame.
Although the YouTuber says it could be “nothing at all”, but said he believes that “mysterious lights” are associated with rocket launches.
One person ominously wrote: “They like to observe what we’re doing in their space.”
Someone else joked: “If Aliens are observing us they are probably shaking their heads.
“Assuming they have heads.”
But a more cynical viewer suggested: “Looks like a gnat stuck on the wet lens flapping its wings trying to move.”
Another person commented that they think space travel is a hoax, writing: “Just another lie being told to the people.
“They’re not in space it’s all water.”
This comes after another mystery object, this time caught on ISS cameras, was branded as “evidence” of extraterrestrial beings by a conspiracy theorist.