A dying star has ejected its outer layer and illuminated it with its powerful radiation. The resulting nebula looks every bit like a transparent human skull. Astronomers are calling the unusual structure the Exposed Cranium Nebula.
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A dying star has ejected its outer layer and illuminated it with its powerful radiation. The resulting nebula looks every bit like a transparent human skull. Astronomers are calling the unusual structure the Exposed Cranium Nebula.