The remnant of this supernova was discovered in 1947 from its powerful radio emission. Listed as Cassiopeia A, it is one of the brightest radio sources in the whole sky. More recently, the Wide-field Infrared Survey Explorer (WISE), detected infrared echoes of the flash of light rippling outwards from the supernova. In the image, the central bright cloud of dust is the blast wave moving through interstellar space heating up dust as it goes. The blast wave travels fast â€“ at about 6% the speed of light. By the time WISE took this image, the blast wave has expanded out to about a distance of 21 light-years from the original explosion. The flash of light from the explosion, traveling at the speed of light, has covered well over 300 light-years. The orange-colored echoes further out from the central remnant are from interstellar dust that was heated by the supernova flash centuries after the original explosion. The false colors in this image represent different wavelengths of infrared light, which is invisible to the human eye. All prints and frames are 100% American made at our warehouse in Cincinnati, OH. We print all art pieces, manufacture our own frames, and stretch our own canvas. All items are on-demand and produced right here! Each print is printed onto semi-gloss paper, and then either rolled or framed before shipping out. Canvas prints are stretched over 1.5-inch stretcher bars. We take pride in the quality of all our products and strive to give our customers the best wall art possible!