Google Mars is a website like Google Earth, but users can zoom in on satellite imagery of the Martian surface.
If certain coordinates are used it shows an artificial colony of white buildings powered by solar panels.
Users can even zoom inside the buildings, showing it is a genuine artificially-built complex.
But there’s little chance of an imminent alien attack as the images are fake and were uploaded to Google Mars, by Google for an April Fools Day joke this year.
The internet giant released a fictitious story at the time to say it had set up a storage facility on Mars.
However, a series of conspiracy theory videos have emerged on YouTube, questioning if the complex could actually exist.
Some questioned if the April Fools story was actually a double bluff to convince people the actual existence of the facility was a joke.
Conspiracy theory website Disclose.tv ran an article entitled “What? Human Martian Facilities Exposed by Google Mars.”
It said: “These buildings that rely on solar panels, continuous power, and radio parabolic antenna.
“There are also images of the interior of these images, which makes us think that this is a joke by NASA.
“Google/NASA making fun of us or what?
“What does it mean to manipulate images of a scientific ecosystem?
“Do you want to make fun of people? Are you going to bury the truth in 1,000 lies?
“Typical psyop to hide the truth?
“Concerned about better and better amateur astronomer’s equipment?
“For many years the theorists of the ancient astronauts suspect that some governments are already living on Martian soil, others even claim that most of the photos are all prepared to be displayed in a way that does not raise suspicion of what is really happening on the planet.”
However, Close Encounters UFO’s video released this week about the images appeared more grounded.
It pointed out the pictures had emerged as part of a clear April Fools joke by Google.
The original joke release from Google was published on March 31, under the heading “Google Cloud Platform expands to Mars.”
It said: “Amidst our growing list of new regions, today we’re pleased to announce our expansion to Mars.
“In addition to supporting some of the most demanding disaster recovery and data sovereignty needs of our Earth-based customers, we’re looking to the future cloud infrastructure needed for the exploration and ultimate colonisation of the Red Planet.
“Our first interplanetary data centre—affectionately nicknamed “Ziggy Stardust”—will open in 2018.
“Our Mars exploration started as a 20 per cent project with the Google Planets team, which mapped Mars and other bodies in space and found a suitable location in Gale Crater, near the landing site of NASA’s Curiosity rover.
“But why stop at Mars?
“The Google Planets team is already hard at work mapping the rest of our solar system for future data centre locations.”