California could be heading for an imminent Big One earthquake, according to the latest conspiracy theories surrounding a mysterious NASA aircraft. A high-tech NASA-owned airplane has been flying bizarrely low to the ground, sparking alarm among residents in California. However, the mystery deepened after the plane’s flight path was discovered.

Spotting the aircraft, CBS2 anchorwoman Jasmine Viel described the low-flying plane as “scary, big and loud”.

She said: “You didn’t know if was going to land. Everyone kind of stopped in their cars, looking up.”

The large plane, which is painted white with a blue stripe and the NASA logo on the tail, was spotted flying at the height of afternoon rush hour in the San Gabriel Valley.

Renowned conspiracy theorist Tyler Glockner – of YouTube channel secureteam10 – uploaded a video on Sunday explaining his views.