A glowing, swirling spiral of blue and purple was seen across the UK and also ... The spiral shape happens because of the rocket's movement, and when light hits the frozen fuel, it reflects ...

The way the light behaves resembles spiral shapes common in nature. The researchers borrowed from classical mechanics to nickname their never-before-demonstrated light vortex an "optical rotatum ...

The fuel freezes quickly because it's so high up in the sky. The spiral shape happens because of the rocket's movement, and when light hits the frozen fuel, it reflects to display the colourful ...