Emission nebulae are some of the most beautiful stellar phenomena. The newly formed hot stars inside the nebulae ionize the surrounding gas making it glow in variety of colors. The focus of this work is to find a method for interactive rendering of simulated emission nebulae. A rendering program has been developed to render and generate nebulae. The emission light color is evaluated as a function of the accumulated density between the gas and the ionizing star. The rendering program can render a large variety of nebulae from any viewpoint with interactive performance on PC hardware. The method proposed in this work is visually accurate to real nebulae.