Figure 18-11: Revealing a Hidden Protostar (a) This visible-light view shows a dark nebula (or Bok globule) called L1014 in the constellation Cygnus (the Swan). No stars are visible within the nebula. (b) The Spitzer Space Telescope was used to make this false-color infrared image of the outlined area in (a). The bright red-yellow spot is a protostar within the dark nebula.

(NASA/JPL-Caltech/N. Evans [University of Texas at Austin])