English: These are three views of Mare Marginis on the moon, taken by the mapping camera of the Apollo 17 mission in 1972, facing north-northeast from an altitude of an average of 124 km on Revolution 27 of the mission. At the right is the east side of Mare Marginis, with the craters Jansky, Jansky F, and the elongated Jansky D in the foreground, and the eastern mare is in the upper left. The center photo shows the central mare with the prominent crater Goddard sourrounded by light materials, the crater Ibn Yunus immediately to its east, Goddard C to the west, half of the large crater Neper in the foreground, and the crater Hubble far to the north near the horizon. The swirls of light material in the mare, thought to be caused by magnetic fields, are visible in this photo. The left photo shows the western mare (more easily visible from Earth), with disconnected "lakes" of basalt, and the crater Cannon. These photos were taken within minutes of each other. The sun elevation drops from 80 degrees at right to 70 degrees at left as the Command module America orbited the moon.