The gibbous Moon

The gibbous Moon

Fig. 5.8 . The gleaming light of a gibbous Moon is shown in this digital combination of several high-resolution, Earth-based images and a representative background star field. Though not visible to the eye, even with a telescope, the color differences at various places on the lunar surface are real. They correspond to regions with different chemical compositions that have been carefully mapped using spectrometers in satellites orbiting the Moon. (Courtesy of Noel Carboni.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University