apogee
(en)
(noun) the point in the orbit of an object (as a satellite) orbiting the earth that is at the greatest distance from the center of the earth / (noun) the point farthest from a planet or a satellite (as the moon) reached by an object orbiting it / (noun) the farthest or highest point; culmination
The apogee of the New Left occurred from around 1968 until about 1977 (the Italian autonomist movement)
notable
6 years, 7 months ago