This image of the Sun is made with an instrument (the Michelson Doppler Imager on the SoHO mission) which shows velocities in the solar photosphere. The "orange-peel" appearance of the image is due to a pattern of convective motions is called supergranulation. The image is the result of averaging 30 full disk velocity images and subtracting the contribution of the Sun's rotation. The color scale is such that dark areas are moving toward the observer and bright areas, away. The smooth area in the center of the image shows that the motion of supergranules is mostly horizontal. Close inspection of supergranules that are farther from the center shows that the edges towards the center are dark and the edges towards the Sun's limb are bright. This pattern reflect the flow within supergranules -- outwards from their centers.