Photo of the Day: A grand light show

Passers-by look at artificially generated auroras on the Hallmark using laser beams and fog. The light installation entitled "Borealis" by Swiss artist Dan Archer is part of this year's Silver Salt Science and Media Festival. Under the motto "Home Earth" it will take place from 14 to 18 October in Halle (Saale).

Image: Jan Woitas/picture alliance via Getty Images