A drone pilot has captured a 'UFO' moving at incredible speed over the Silicon Valley in California. The DJI Inspire 1 was able to capture the fast-moving object using its 4K video camera.
Despite that the object still only appears as nothing more than a white blur giving some indication of its incredible speed.
Now when you hear the term 'UFO' it's easy to get caught up in the world of alien abductions and "Independence Day" style cloud formations.
The truth is 'UFO' simply means an object that we can't identify and as this video so aptly demonstrates, it can be the size of house or as small as a drone.
Explanations have ranged from it being a fake to others suggesting that this is an as-yet unidentified species of supersonic bird. If we're honest we might actually prefer the bird theory to the alien one.