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• Apsis - Wikipedia, the free encyclopedia

  The most common are perigee and apogee, referring to orbits around the Earth (Greek γη gê earth), and perihelion and aphelion, referring to orbits around the Sun (Greek ...

• Perihelion

  Includes literary theory articles alongside poetry.

• Perihelion and Aphelion

  The closest point to the Sun in a planet's orbit is called perihelion. The furthest point is called aphelion. Notice how the planet moves fastest at perihelion and slowest at ...