bild

Crescent Moon with Earthshine and Saturn. The rest of the Moon is visible due to Earthshine, which is the fainter reflection of sunlight from the Earth to the Moon and back again. This is a waning crescent Moon. Saturn is the faint dot near the horizon at lower right. Photographed at the end of nautical twilight on 27 December 2019, from Amieira beach in the Alqueva Dark Sky Reserve, Portugal. (KEYSTONE/SCIENCE PHOTO LIBRARY/MIGUEL CLARO/SCIENCE PHOTO LIBRARY)