In a photo that’s storming the internet, an unnaturally round shape can be seen in the skies. While it takes the colour of the clouds around it, its sharp edges and smooth curves set it apart.
And if the shape is reflected in a mirror, the resulting outline looks dramatically like a flying saucer. Since then it has sent UFO enthusiasts into overdrive, fuelling belief in alien life, according to Vietnamese news site Soha.
Believers have cited the ships colour as evidence of extra-terrestrial camouflage technology, the report reveals.
Yet there’s another explanation for the remarkable photo, a freak weather event called a lenticular cloud.