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This website has gathered images taken at different wavelengths by a variety of ground-based and space-borne observatories, including selected astronomical objects in the famous Messier catalog, as well as for some non-Messier objects. An online gallery introduces the wealth of data available at wavelengths beyond the familiar visible light. Users will discover some important characteristics of astronomical phenomena, and learn about which types of radiation are best suited for studying certain objects. The Gallery features a mosaic of various images, each taken at a different wavelength. By scrolling down through the Gallery, you will find copies of each image, accompanied by explanatory text which will explain the similarities and differences between images.