Subject ASC0000e3h
The Intellectual observer.
v.10 (1867), Page 468 (1867)
Harvard University, MCZ, Ernst Mayr Library
BHL Page 39470500
Keywords
mars orbit astronomy planets poles earth movement of planets axis rotation south pole Ariel north pole Ariel astrophysics Astronomy Moon Mars January 1867 winter opposition orbits winter solstice surface Earth axial tilt coordinates North Pole South Pole polar view appearance