The Iris Nebula, NGC lies light-years away in the constellation Cepheus. Atoms floating in the interstellar medium, including carbon and silicon, combine into tiny particles about the dimension of a visible light wave, causing scattering of light.
NGC sometimes called the Iris Nebula. These clouds of interstellar dust and gas have blossomed light-years away in the fertile star fields of the constellation Cepheus. The pretty blue petals of the Iris Nebula span about six light-years