NASA has been accused of covering up an alien sighting after a video surfaced showing six UFOs passing the International Space Station live-stream seconds before the feed is cut and replaced with images from a camera showing the inside of a briefing room.

The live video shows objects, which some claim to be UFOs, moving from right to left of the screen.

The unusual footage was taken from Nasa’s live feed of the International Space Station and clearly shows show what are clearly large spherical objects creeping past.

In the live video, relayed by the American space agency, the UFOs move from the right of the screen towards the left.

But even more mysteriously the live feed was quickly replaced by NASA and replaced with alternative footage.

It was originally spotted by a UFO spotter Streetcap1, who share the clip with SecureTeam10 , a group of UFO experts, who investigate the footage and share their findings online.

Tyler from SecureTeam said: “He has discovered what some are calling a fleet of unidentified flying objects moving in the distance behind the International Space Station.

“We have about six UFOs passing behind, and judging from the distance, I would guess that the size of these objects, whatever they are, would be fairly large.

“Much larger than Nasa’s typical excuse of ice particles, we must be looking at icebergs.”

Tyler explained that suspiciously Nasa cut the live feed and replaced it with feed from camera showing the inside of a briefing room.