EXTRATERRESTRIAL conspiracy theorists are convinced that NASA is covering up proof of alien life.

A UFO researcher believes that they have spotted a black cube “orbiting the sun” in a snap taken by the European Space Agency’s Solar and Heliospheric Observatory.

“More and more people on Earth, see the mysterious phenomena in the sky, as well as unidentified flying objects,” the YouTuber explained.

“Governments of all countries withhold information from its citizens and put pressure on witnesses and the media.

“This resource was created to promote the free flow of information on UFOs and paranormal phenomena, bypassing the ban and censorship of the government.

“People need to know the truth.”

Another Martian researcher, Scott C. Waring from UFO Sightings Daily, believes he’s seen the hovering black shape before.

”The cube has been seen before off and on,” he explained.

“Sometimes it’s seen in three dimensions other times like this just two.”

It’s not the first time this year that space authority NASA have been forced to defend themselves against conspiracy theorists.

After an ISS live feed suddenly went down, UFO enthusiasts were convinced that it was because they were attempting to conceal a U-shaped object floating through the sky.

The UFO was first spotted by Scott Waring, from UFO Sightings Daily, as he observed the live stream.

Scott then passed the clip on to fellow alien hunter Tyler Glockner - who uploaded the footage to his YouTube channel ‘secureteam10’.

“When you play this footage quickly, it looks like the UFO changes its position,” Tyler said narrating the video.

“When we first see it it’s more on its side, but when you cycle through the footage it seems to be manoeuvring more on its face.

“It’s definitely another interesting find and once again directly after it appears NASA cuts the feed.

“That’s why you see the screen go blue. They’ve done this, they have been doing this, and they have their hand on the chicken switch as they call it.

“I know they monitor these feeds but sometimes they’re not quick enough and UFOs appear.

“We have documented that on this channel for years now.

“The only time when the feed tends to get cut is oddly when these UFOs appear.”

What do you think? Alien cover-up, or just a coincidence?