Details in the Hubble Space Telescope image of the active galaxy M82.
Left: A portion of M82's bluish disk, largely composed of young, hot stars. Numerous bright blue-white star-forming clumps and wisps of darker, cooler dust and gas appear superimposed on the disk.
Center: The central "inner-city" portion of the galaxy showing the combined light of countless stars and revealing numerous star-forming clumps, dark red clouds of gas and dust obscuring the light from the galaxy's core, and an overall field of fainter resolved and unresolved red (cooler) and blue (hotter) stars.
Right: Plumes of gas and dust amid a field of numerous faint, resolved stars blown from the central regions of M82 into the outer "suburbs."