Astronomy Picture of the Day . Solstice Sun at Lulworth Cove . ... A southern exposure and striking symmetry made Lulworth Cove, along the Jurassic Coast of England, planet Earth a beautiful setting during this December's Solstice. Five frames in this dramatic composite view follow the lowest arc of the Sun, from sunrise to sunset, during the shortest day of the year. ... Since the Sun is 109 times the diameter of Earth, a 1.5 meter diameter balloon could represent the Sun. ...