THIERRY LEGAULT / EURELIOS / SCIENCE PHOTO LIBRARY THIERRY LEGAULT / EURELIOS / SCIENCE PHOTO LIBRARY
Waxing crescent Moon. North is at bottom. As the Moon orbits the Earth, the amount of sunlight seen on its visible hemisphere varies in a regular 28- day cycle. This is a waxing crescent Moon, 4 days into the cycle. As the cycle progresses, the motion of the Moon in its orbit around the Earth will move this visible hemisphere further into the sunlight. The dark area (at right) will become visible as the lunar day dawns on a waxing Moon. Photographed in Earth's southern hemisphere.
Model release not required. Property release not required.