Consisting of concentric circles of stone surrounded by a moat (called a "henge"), Stonehenge was constructed in several stages over thousands of years.
An onionskin-likestructure of concentric dust shells surround a central, aging star.Twin beams of light radiate from the star and illuminate the usuallyinvisible dust.
They display a different pattern of flame structure to an experienced eye, which consists of concentric radiating flames and parallel banded layers displaying a distinct “pseudo-chatoyancy” effect.