Full Moon. Full Moon over a city during twilight. The planet Jupiter is visible as a pinpoint of light to the lower-left of the Moon. Neither the Moon nor Jupiter produce their own light, but they can be seen because they reflect the light of the sun. The dark areas, or 'seas', which can be seen on the Moon are the remains of ancient plains of lava. The craters which can also be seen are the result of impacts from meteorites. Jupiter, the largest planet in the solar system, can be observed for several months each year. Photographed over Vancouver, Canada.