bild

3 day old Moon with Earthshine. This is a waxing (increasing in apparent size) Moon. The bright crescent (right) of this Moon is directly illuminated by sunlight. The rest of the dace od the Moon is illuminated by sunlight reflected from the Earth, a phenomenon known as Earthshine. This stage in the phases of the Moon is between the new Moon and first quarter (half moon). (KEYSTONE/SCIENCE PHOTO LIBRARY/J-P METSAVAINIO/SCIENCE PHOTO LIBRARY)