After being born in a cloud of gas and dust, a massive star undergoes an exceptionally dynamic evolution. During one of its most spectacular phases, it may become a Blue Supergiant — an enormous, exceptionally hot and luminous star, powered by intense nuclear fusion reactions deep within its interior and distinguished by its characteristic blue-white glow. In this instalment of the collection, the central magnifying lens draws the eye to the structure of one of the most impressive objects in the Universe. The digital photographic print emphasises the intensity of its radiation, whilst the precise details allow us to peer into the heart of this powerful star.