A mysterious object has been spotted flying by the International Space Station, sparking claims that astronauts just had a near-miss with a UFO.

The unidentified object was seen on October 15 as a SpaceX Dragon cargo spacecraft was approaching the station with new supplies.

NASA’s live stream of the docking captured the bright disc or small sphere moving steadily by the ISS moments after the broadcast began.

Scott C Waring of UFO Sightings Daily saw the object and said: ‘This UFO was about seven meters [23 feet] across and could have destroyed the station had it hit it.’

‘The crew on board the DragonX said nothing about it, not NASA control, not even the station itself,’ he added.

The UFO researcher also claimed that the NASA broadcast captured another unidentified craft moving erratically around the Dragon cargo ship.

NASA’s report of the capsule’s arrival described a normal docking that delivered more than 6,300 pounds of supplies, science experiments and a pair of roll-out solar arrays.

There was no mention of any close call, space debris threat, or UFO during the approach or docking last month.