Another UFO has been spotted hovering over the International Space Station, conspiracy theorists claim.
Footage allegedly taken from a Nasa camera shows a pink and white object soaring across space.
It has reignited claims the ISS is being 'monitored by extra-terrestrials'.
The latest supposed sighting comes after another Nasa video, shot from the ISS in June, which showed mysterious lights 'leaving' Earth before the stream cut.
According to a prolific Nasa watcher, YouTube user Streetcap1, it proved Nasa is trying its best to prevent us knowing about a mysterious alien race.
The most likely explanation is much more mundane, with the sudden blackout caused by either a camera glitch or a fragment of space debris. Nasa has refused to comment on the debacle.
But with the latest video, Bright UFO above Earth, Streetcap1 is convinced Nasa's ulterior motives are laid bare.
Streetcap1 captioned the video: 'During a period when the camera is moving for around two minutes, Nasa captures a distant pink and gold object.
'Caught August 3 2015. We need them to maybe start pointing the ISS cameras outward and stop treating people like children.'
Many commenters accuse Streetcap1 of doctoring the footage. The user admitted to adjusting the lighting to 'bring out' and 'clarify' certain qualities, but insists the rest is direct from Nasa.
The June video is a short clip taken from Nasa's ISS live stream, which shows the views from cameras on the space station.
Created by Mister Enigma on YouTube, the video advises viewers to watch in full screen mode as 'the UFOs are really small.'
Watching the video, a small speck of light can be seen very faintly in the distance rising from the atmosphere.
The feed from Nasa then cuts out, with the message: 'Please stand by.
'The High Definition Earth Viewing experiment is either switching cameras, or we are experiencing a temporary loss of signal with the International Space Station.'
The video then replays the footage but zooms in, showing what seem to be two rotating dots rising from the atmosphere.
But before proclaiming that humanity has finally made first contact with aliens, it's probably worth pointing out that there are several more rational explanations.
First, the quality of the video is extremely low. The two specks of light could simply be a glitch in the footage, or a glint of sunlight.
It could also be some space debris orbiting Earth, or even a satellite.
And the timing of Nasa switching off the video, while unfortunate, is certainly not on purpose; Nasa often switches cameras or temporarily turns off the feed.
This can be for a number of reasons, such as the station moving out of range of ground stations.
It's also highly unlikely that Nasa monitors this feed constantly, as it runs almost around the clock seven days a week, apart from these brief stops.
'I'm a bit suspicious of this video, it could be of 'real' objects out there or some form of camera trickery,' Nigel Watson, author of the UFO Investigations Manual, told MailOnline.
'UFO spotters love to see any object or flick of light out there as proof that extraterrestrial craft are monitoring our planet, and are keeping an eye on the ISS at a distance.
'Though if they are piloted by aliens using advanced technology wouldn't they have perfected the means to hide themselves completely from our cameras?'
This latest UFO claim follows another last week, with conspiracy theorists saying they had found a 'pyramid' on Mars.
Citing the 'near-perfect design and shape', they argue the 'pyramid' is evidence that an ancient civilisation once lived on the red planet.
While the pyramid is believed to be 'car-sized', alien-hunters say it may be just the tip of a much larger structure buried beneath.
YouTube channel ParanormalCrucible used video footage taken by Nasa's Curiosity Rover on 7 May to back up its claims.
'None of the Curiosity Rover's subsequent photos taken at 20 to 30 sec intervals in the following few minutes and the subsequent photos hours later, included the object,' wrote UFO site Exopolitics.
The pyramid, though, is almost certainly just a chance shaping of a rock on the red planet that happens to look vaguely similar to something familiar to us on Earth.
The International space station in numbers
Construction of the ISS began on 20 November 1998. It supports a crew of up to six, with crews typically split into groups of three.
The station orbits at a height of about 255 miles (410km). It has a total mass of about 990,000 pounds (450,000kg) and has living space roughly equivalent to a five-bedroom house.
It completes an orbit of Earth every 92.91 minutes and moves at 17,100 miles (27,600km) per hour.
It has now been in space for more than 6,000 days, during which time it has completed more than 92,500 orbits of Earth, and has been continuously occupied for more than 14 years.
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