Remnants from a star that exploded thousands of years ago were captured in this image of the Pencil Nebula released Friday, June 6, 2003. Officially known as NGC 2736, the Pencil Nebula is part of the huge Vela supernova remnant. Discovered by Sir John Herschel in the 1840s, the nebula's linear appearance triggered its popular name.
(Photo: AP/NASA)
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