The Sun setting framed by the ruins of the 69th Street Transfer Bridge at the Hudson River Waterfront, 20 December |
The solstices, such as the equinoxes, are also an astonishing proof of how geometry is not only an abstraction to assist in the understanding of the physical world, but has a crucial role in the functioning of the universe. The geometry of the sun is an example in how day-night cycles and seasons are determined by geometric properties, namely the 23.45° angle of the axial tilt of the earth axis —that is the angle between the orbital plane of the earth rotation around the and the equatorial plane. This angle also defines the tilt of the ecliptic plane and the plane of celestial equator.
The solstice it also a time for reflections. 2015 has been another difficult year, marked by divorce and harassment, which have experienced in different forms and from different people from my husband and my New York neighbors. Celebrating the solstice it for me it has become another metaphor, where the darkness of this time of hatred will change path toward light of compassion and support.
A pale sun rising in Central Park, during the solstice day, the shortest day of the year |