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Michael Hill, the principal investigator leading the project, said: 'Using a celestial object like the sun for a background has a lot of advantages when photographing a flying aircraft. However, they have now revealed a new patent-pending method, that uses ground-based cameras to capture the shock waves using the sun or the moon as a backdrop instead.Ĭalled Background-Oriented Schlieren using Celestrial Objects, or BOSCO, the technique has produced some of the most stunning images of supersonic aircraft ever captured.įor example, they reveal how each surface of a supersonic T-38C produces a distinctive shock wave as the air buckles around it. Following five years of development, Nasa scientists have previously shown they can use this technique to capture images of the shock waves from above using the speckled desert floor as a backdrop.