Fig10_5 North American Nebula 516093

Fig10_5 North American Nebula 516093

Fig. 10.5 . Clusters of relatively young stars, about one million years old, are found throughout this infrared image of the North America Nebula, also designated as NGC 7000. The infrared detectors aboard the Spitzer Space Telescope have penetrated the dark clouds seen in optically visible light, viewing young stars in many stages of formation, including gas and dust cocoons, disks and jets. The North America Nebula is about 1,500 light-years from Earth and spans about 50 light-years. (Courtesy of NASA/JPL-Caltech.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University