A disc-shaped UFO has been filmed by NASA cameras entering the Earth's atmosphere - or so alien enthusiasts believe.
The latest sighting of space activity has been shared online as a large UFO in a disc shape appears to drift by the camera.
Uploaded to YouTube by UFO Sightings , the craft appears to have an indentation at its rear.
The poster clearly believes it's an out-of-this-world close encounter, calling the video "New NASA uncut footage shows clear UFO".
To read more and view the video, click here.