Reflection Nebula M78 (NGC 2068)

NASA’s Spitzer Space Telescope looked at nebula M78 (NGC 2068). M78 is a perfect example of reflection nebulae illuminated by radiation from stars. It is located at a distance of 1350 light years from Earth in the constellation Orion and is easily observed in a small telescope.Two bright stars, HD 38563A and HD 38563B, are the main”power”, illuminating M78.The picture by NASA’s Spitzer Space Telescope shows dark-red waves, which outline the brighter in the infrared parts of the nebula, while revealing the depth of the latter, on it appear very young stars. Many of these young stars are of type T Tauri, the stars that haven’t yet reached the main sequence. 

They are very young, belong, as a rule, the spectral classes F, G, K, M, have a mass  less  than  two solar and often surrounded by a protoplanetary disk. Study of T Tauri stars to help astronomers to understand early stage of formation of stars and formation of planetary systems around them. When these young stars shine in full force, they will change the shape of the nebula beyond recognition, dispersing their surrounding gas and dust by their stellar winds.
source:www.kosmos.of.by