noun: periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth

""All planetary masses Keely calls terrestrial, showing that the beauty of the celestial concordant chords of sympathy forming the harmonious connective link, is what may be denominated "the music of the spheres," and is seen in the alternate oscillating range of motion between the planetary systems, for at a certain range of the greater distance, harmony is established and the attractive forces are brought into action, and then, in the return towards the neutral centers when at the nearest point to each other, the opposite or propulsive force is brought into play." [Keelys Three Systems] [See Apsidal]

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Created by Dale Pond. Last Modification: Wednesday March 15, 2017 04:41:00 MDT by Dale Pond.