英语词汇“aphelion”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

aphelion

/apˈhiːlɪən

noun (plural aphelia /apˈhiːlɪə/) Astronomy

The point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun: Mars is at aphelion...

This affects the climate because the influx of solar energy to our planet would then vary between perihelion and aphelion by a larger proportion than at present.
This is because at aphelion the planet is moving slowest, and consequently it is less likely to pass across the Sun during the critical window.
There are small cyclic variations in those apparent sizes because the Earth-Moon distance changes as the latter moves between perigee and apogee, and the Earth-Sun separation alters as the former moves between perihelion and aphelion.

The opposite of perihelion.

Mid 17th century: alteration of modern Latin aphelium (by substitution of the Greek inflection -on), from Greek aph' hēlion 'from the sun'.

单词	aphelion
释义	aphelion /apˈhiːlɪən / noun (plural aphelia /apˈhiːlɪə/) Astronomy The point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun: Mars is at aphelion... This affects the climate because the influx of solar energy to our planet would then vary between perihelion and aphelion by a larger proportion than at present. This is because at aphelion the planet is moving slowest, and consequently it is less likely to pass across the Sun during the critical window. There are small cyclic variations in those apparent sizes because the Earth-Moon distance changes as the latter moves between perigee and apogee, and the Earth-Sun separation alters as the former moves between perihelion and aphelion. The opposite of perihelion. Origin Mid 17th century: alteration of modern Latin aphelium (by substitution of the Greek inflection -on), from Greek aph' hēlion 'from the sun'.
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