This nearly full-face view of Jupiter was made by the Pioneer 10 spacecraft from 2,695,000 kilometers (1,842,451 miles) away, as it flew past the planet, on December 1, 1974. Because Pioneer rotated for stability, it could not focus a camera lens to take photographs as ordinary cameras do. As Pioneer 10 flew by Jupiter in the fall of 1973, it made successive scans of portions of the planet. These partial images were assembled on Earth to produce this dramatic image of Jupiter’s giant "Red Spot." This was just one of the many scientific results of the Pioneer missions.