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Apsides

Carlo

Aterral
ATRRL015 | 2022-08-12  
Did You Know that the words perihelion and aphelion come from ancient Greek, where peri means close, apo means far, and helios means the Sun? They are used in astronomy to refer to the closest and farthest points of the orbits of any object revolving around the Sun. Together, they are called apsides - the points of least or greatest distance of a celestial object in orbit around another astronomical body.

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