'Alien invasion' fears after incredible UFO clouds appear in the sky

The long lenticular clouds were snapped by 28-year-old Alfred Lee, an astronomy enthusiast, above Hong Kong.

He was on Ma On Shan's Chevalier Garden when he noticed the weird formation.

It is actually two clouds – a long lenticular cloud and a colourful iridescent cloud.

His photo is so impressive it was even named as Nasa's Astronomy Photo of the Day.

Mr Lee said he fell in love with astronomy while working for in the US where he could see stars due to milder light pollution.

Awarding Mr Lee with Astronomy Photo of the Day, a Nasa spokesman said: "In the foreground was a long lenticular cloud, a cloud that forms near mountains from uprising air and might appear to some as an alien spaceship.

"Higher in the sky, and further in the background, was a colourful iridescent cloud.

"Iridescent clouds are composed of water droplets of similar size that diffract different colours of sunlight by different amounts.

"Furthest in the background is the sun, blocked from direct view by the opaque lenticular, but providing the light for the colours of the iridescent.

"Either type of cloud is unusual to see in Hong Kong, and unfortunately, after only a few minutes, both were gone."

It's not the first time breathtaking clouds have been spotted in the sky.

There was widespread panic after an alien mothership-style cloud appeared in Texas last June.

There were fears of another invasion in Ontario, Canada, after a weird formation was found in October 2015.

Russians thought they were under nuclear attack last June – but it was just an innocent mushroom cloud.

(dailystar.co.uk)