American photographer Robert Franke used narrowband filters to increase the detail in this image of the 'Witch's Broom' nebula - the remnants of an ancient explosion in deep space. Part of the Veil Nebula, the ‘Witch’s Broom’ is the glowing debris from a supernova explosion – the violent death of a massive star. Although the supernova occurred several thousand years ago, the gaseous debris is still expanding outwards, producing this vast cloud-like structure.
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