Asteroid 951 Gaspra and spacecraft Galileo.
Caption: The Galileo spacecraft (right) returned the image of asteroid 951 Gaspra (left) in October 1991, which is shown in exaggerated color to reveal contrasts. Gaspra measures 20 by 12 by 11 km and craters only 100 m across are visible in this image.
Copyright:
Credit: JPL/NASA