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File:Qualitative apparent retrograd motion of Mars (as seen from the Earth).svg

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English: Apparent retrograde motion of Mars as seen from the Earth.
Italiano: Moto retrogrado apparente di Marte visto dalla Terra. Rispetto alle stelle fisse, e in particolare rispetto alle costellazioni dell'Acquario e del Toro, il pianeta Marte (rappresentato dai cerchi rossi negli istanti successivi 1, 2, 3, ... , 7 a intervalli di un mese) sembra muoversi lungo una traiettoria "annodata" (rappresentata dalla linea nera continua): sembra muoversi regolarmente verso est tra 1 e 3, retrocedere verso ovest fino a oltre 5 e poi ricominciare a muoversi normalmente passando per 6, 7, 8. A questo moto si aggiungono deviazioni nella latitudine, misurabili con la distanza angolare del pianeta dall'eclittica (la linea tratteggiata, che indica il percorso annuale del Sole).
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Source Based upon data from Thomas S. Kuhn, La rivoluzione copernicana (The Copernican Revolution), Einaudi, Torino, 2000, p. 63.
Author Own work MLWatts

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current16:40, 27 June 2013Thumbnail for version as of 16:40, 27 June 20131,512 × 1,134 (32 KB)MLWatts (talk | contribs)User created page with UploadWizard

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