The red, green, and blue regions in this Chandra X-ray image of Cassiopeia A show where the intensity of low, medium, and high energy X rays, respectively, is greatest
Copyright: Chandra X-ray Observatory Centre
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The red material on the left outer edge is enriched in iron, whereas the bright greenish white region on the lower left is enriched in silicon and sulphur. In the blue region on the right edge, low and medium energy X rays have been filtered out by a cloud of dust and gas in the remnant.
(Image courtesy Chandra X-ray Observatory Centre)
Last Update: 1 September 2019
