Why is '-ed' sometimes pronounced at the end of a word? What's the difference between 'fascism' and 'socialism'? Popular in Wordplay See All More Words with Remarkable Origins Terroir, Oenophile, & Magnum: Ten Words About Wine 8 Words for Lesser-Known Musical Instruments ...
per•i•he•li•on/ˌpɛrəˈhiliən, -ˈhilyən/USA pronunciationn.[countable],pl.-he•li•a /-ˈhiliə, -ˈhilyə/.USA pronunciation Astronomythe point in the orbit of a planet or comet at which it is nearest to the sun.Compareaphelion. ...
An interpretation of a series of precise relationships (Barricelli, 1972a) between planetary perihelion and aphelion distances, leading to the definition of preferential perihelion and aphelion distances, designated as meeting distances is outlined. The interpretation is based on Alfv茅n's (1969) jet...
Over the past 2000 years, the perihelion has shifted from December 17 to January 4.Mathematicians and astronomers estimate that in 6430, over 4000 years from now, the perihelion will coincide with the March equinox does perihelion/Aphelion Affect you?