These stunning images show mysterious columns of light streaming
into the sky above the town of Sigulda in Latvia at the end of last
month.
Taken by designer Aigar Truhins with a standard
digital camera, the photographs have prompted excited online discussions among
amateur astronomists all over the internet.
But experts are agreed there may be a more prosaic explanation -
ice crystals in the air.
The air above the town was notably cold and filled with
suspended ice crystals.
It is believed that the columns were formed by those reflecting
light from the bright streetlamps and other lights on the ground - beaming it
back downwards again.
Skies all over Europe have been filled with such natural
phenomena during the cold snap of recent weeks.
Scientists at the website spaceweather.com said: 'Truhin’s pillars
are not the ordinary kind. Even eading experts in atmospheric optics can’t quite
figure them out
'We do not know – so take more photos on cold nights!'
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