TheMoon orbits Earthcounterclockwise on an elliptical path when looking down at the Earth’s North Pole, and the same side of the Moon always faces Earth. However, over time, the Moon rocks slightly from north to south and wobbles a little from east to west. This motion, known aslunar li...
aFigure 2.1, This is a schematic of the centroid reference system.The sun around a common centroid as a clockwise motion (red). the planets revolve around the common center of mass for counterclockwise motion (green). 图2.1,这是centroid参考系的概要。太阳在一共同的矩心附近作为顺时针行动 (红色...
Viewed from the celestial north, the motion of the Earth appears to orbit the Sun in a counterclockwise direction. Combined with its axial tilt – i.e. the Earth’s axis is tilted 23.439° towards the ecliptic – this results in seasonal changes. In addition to producing variations in terms...