A viewer watching this past weekend's successful SpaceX launch online spotted what he believed to be a mouse crawling along the rocket as it soared into space, but experts say the anomaly probably wasn't really a hitchhiking rodent.
The weird moment was noticed by a Pennsylvania man who promptly captured the scene and posted it to his Twitter account.
The clip captured the imagination of people on social media, quickly going viral and amassing over a million views.
In the video, a curious object can be seen seemingly scurrying around the base of the rocket as the man declares "I don't care what you say, that is a mouse!"
It turns out that the 'mouse' is almost certainly just a piece of frozen liquid oxygen that was vented out of the rocket engine during its journey to the ISS.