21 January 2019, Schleswig-Holstein, Aukrug: When darkened, the full moon appears as a so-called &quot;blood moon&quot; and appears reddish, while it steps into the so-called core shadow of the earth illuminated by the sun (photo with long-term exposure). The shadow of the core covers the visible surface of the moon. Moon, sun and earth are exactly in line. Photo: Carsten Rehder/dpa