The world watched in horror as SpaceX's Falcon 9 burst into flames on the Cape Canaveral launch pad during a routine check for its long awaited trip to space to launch a Facebook satellite earlier this.

SpaceX CEO Elon Musk said the blast originated around the upper stage oxygen tank, but what caused it still remains a mystery.

However, conspiracy theorists have developed a different theory after seeing ‘an anomaly’ pass over at the same time as the blast and suggest an alien air strike sabotaged the mission.

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Alien hunters have developed their own theory of what caused SpaceX Falcon 9 to explode yesterday. Footage from the blast shows ‘an anomaly’ pass over at the same time as the blast and skeptics believe it was an alien air strike that sabotaged the mission

WHAT ARE THE CLAIMS? Following yesterday's SpaceX Falcon 9 failure, videos have surfaced showing a strange 'anomaly' flying over the rocket before, during and after the explosion. Conspiracy theorists claim it was an alien air strike that sabotaged the launch. Some suggest aliens may have thought bombs were attached to the tip and thought it was their good deed to stop it from taking off – in a bid ‘to put an end to nuclear missiles and war’. One Reddit user claims to be a welder working at the site before Falcon took off and saw strange lights above the pad that hovered for about 20 seconds then they disappeared. Then 20 minutes later, the rocket exploded. However, some individuals aren’t sold on an extraterrestrial conspiracy and believe it was nothing more than a bird. Advertisement

Around 9am EST, the 604-ton rocket was being fueled with a concoction of liquid oxygen and rocket-grade kerosene propellant when the upper region burst into flames.

The entire craft was engulfed in what seemed like seconds, including Facebook’s $200 million communication satellite that was specifically designed to bring internet to Africa.

And although Flalcon 9’s creators are baffled by the turn of events, a new theory has emerged that could provide answers.

Since the explosion, YouTube videos have been surfacing that highlight a mysterious anomaly passing over Falcon 9 as it sits on the launch pad before, during and after the explosion, Daily Express reported.

YouTuber Graphics King posted footage yesterday and slowed down the video to reveal a black object flying over the rocket at the moment it met its fate.

Alien hunters, Martian researchers and the non-believers have all flocked to the video in order to state their opinions of what this mysterious object might be.

Some firmly believe the rocket exploding was not a mechanical error, but an attack from another world.

‘I am pretty sure this is not the first time they hit us. I saw another rocket in flight (right after lift off), being destroyed by a saucer,’ a users by the name of ‘UFO Hunter’ shared.

The world watched in horror as the SpaceX Falcon 9 burst into flames on the Cape Canaveral launch pad during a routine check for its long awaited trip to space. A brokenhearted Elon Musk (pictured), SpaceX CEO, said the blast originated around the upper stage oxygen tank, but what caused it still remains a mystery

Around 9am EST, the 604-ton rocket was being fueled with a concoction of liquid oxygen and rocket-grade kerosene propellant when the upper region burst into flames. Musk shared a Tweet (pictured) about the failed mission shortly after

‘I guess these rockets look too much like ICBMs with a big fat bomb attached to the tip!

‘The Aliens are trying to put an end to nuclear missiles and war.’

Another shares: 'That bug is at least going 3,600mph minimum. Its not a bird, its an Alien with a laser that destroyed the rocket.'

Since the explosion, YouTube videos have surfaced highlighting a mysterious anomaly passing over Falcon 9 as it sits on the launch pad before, during and after the explosion. YouTuber Graphics King slows down the clip to show a black object flying towards the rocket before it bursts into flames

Alien hunters, Martian researchers and the non-believers have all flocked to the video in order to state their opinions of what this mysterious object might be. Some say it was an alien laser strike, while others think it was simply a bird that flew over

However, others have chimed in to debunk the theory of extraterrestrials.

‘Sadly it was just a bird flying past, if you watch the normal speed video, there are birds flying past start to end,’ Richard Edwards shares.

One individual claims to have seen the extraterrestrial vehicle hover over Falcon 9 with their own eyes.

A Reddit users by the name of ‘rainbowfish4’ claims to be one of the welders at Kennedy Space Center who was working on the launch and submitted a post following the explosion.

Rainbow24 states there were strange lights that appeared ‘in the sky above the pad’ while they were getting ready for the launch.

A Reddit users by the name of ‘rainbowfish4’ claims to be one of the welders at Kennedy Space Center saw strange lights that appeared ‘in the sky above the pad’ while they were getting ready for the launch and 20 minutes later the rocket exploded

SPACEX'S CHECKERED (AND EXPLOSIVE) HISTORY Founded in 2002 by PayPal founder Elon Musk, SpaceX has been one of the driving forces behind the efforts by commercial companies to venture into space. Previously the domain of government-sponsored national agencies like Nasa and Russia's Roscosmos, launching spacecraft into orbit was seen as being prohibitively expensive. SpaceX, however, became the first privately funded company to launch a rocket powered by liquid-propellant into orbit in 2008 with its Falcon 1. It later became the first to launch, orbit and recover a spacecraft. With the end of the Nasa's Space Shuttle program, SpaceX has also stepped in to allow the US to continue to send supplies to the International Space Station. In 2012 the company was the first private firm to send a spacecraft packed with cargo to resupply the space station. This year alone it has achieved eight launches carrying supplies to the ISS and a number of satellites into orbit. But SpaceX's journey has been hit with setbacks and problems. Perhaps its worst accident to date occurred on June 28 2015 one of its Falcon 9 rockets carrying an unmanned Dragon capsule filled with cargo for the ISS exploded just minutes after launch. An investigation into the explosion revealed a failed strut on the helium pressure vessels broke as it accelerated out of the atmosphere, allowing a catastrophic escape of gas. Part of SpaceX's model for reducing the cost of space travel is to reuse its rockets. But this has been beset with a series of accidents that saw the rockets topple over and explode during these landing attempts. It lost two rockets after they failed to land safely before it managed to successfully land the first stage booster at Kennedy Space Center on December 21 2015. Freezing fog that caused a landing leg to fail to lock caused another rocket to topple over on a barge in January 2016 on landing. Since then the company has managed to land four of its Falcon 9 launch rockets on floating barges at sea. But on 15 June this year another of its rockets toppled over and was destroyed after managing to touch down on a barge. The company has also had problems while in orbit. In March 1 2013 a Dragon spacecraft suffered thruster issues due to a blacked fuel valve leaving it unable to properly control itself before docking with the ISS. On this occasion engineers were able to remotely clear the blockages and the craft docked with the ISS one day later than scheduled. Advertisement

‘About 20 minutes before launch there was an impression in the cloud (its rainy here) of an oblong shape you could almost see the blue sky through it then 3 white lights appeared in the center of it and then just appeared with a blink of an eye they were visible for maybe 20 seconds.

The Reddit users continues to explain that just 20 minutes after the bizarre sighting, the rocket exploded.