The extraordinary claim is made in footage released on YouTube by channel Pete WDHco.
The video, entitled "ISS Space Station Attacked or Attacks Missile or UFO Interesting Capture” claims to be recorded by the ISS's own live-stream camera this month before being sent to it by Heather Ortiz from California.
In the video, which has been broadcast as a series of still images rather than moving footage, a dark cylindrical-shaped object appears to have passed closely above the Earth to a portion of the ISS that can be seen to the left of the frame.
In the next clip, it appears to have moved away from and in front of the ISS.
A later clip shows it further away still, and seemingly descending towards the planet.
To read more and view the video, click here.