Nasa. LARGE FORMAT. This photograph shows a tricolor composi - Lot 258

Nasa. LARGE FORMAT. This photograph shows a tricolor composite of the famous Crab Nebula. It is the remnant of a supernova explosion located at a distance of about 6000 light years. Here, the green light is mainly produced by a hydrogen emission from material ejected from the exploding star. Blue light is mainly emitted by very high energy electrons that spiral in a magnetic field. Period chromogenic print. Numbering on the front. Caption on label on the back. 40.6x40.6cm with margins. Nasa. WIDE FORMAT. This photograph shows a three-color composite of the famous Crab Nebula. This is the remnant of a supernova explosion at a distance of about 6000 light years. Here, the green light is predominantly produced by hydrogen emission from material ejected by the star that exploded. The blue light is predominantly emitted by electrons of high energy spiralent in a magnetic field. chromogenic draw time. Dial on the front. Legend rear label. 40,6x40,6cm with margins.