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Old May 20th 18, 11:23 AM posted to sci.astro.amateur
Gerald Kelleher
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Default Illusory loops vs actual loops.

I take no offence from those who have no natural capacity to discern the long term actual loops of the faster moving planets closer to the Sun and especially Venus -


https://apod.nasa.gov/apod/ap060110.html

The approach of Venus to the slower moving Earth creates a composite narrative with the observed actual loop of the planet for those who don't set up conceptual obstacles for once seen it is impossible to ignore.

http://venus.aeronomie.be/multimedia...-geo-helio.gif


It is therefore something new to distinguish direct/retrogrades by perspective where the illusory loops of the slower moving planets are discerned from actual orbital loops of the faster moving planet. For me it is celebration of contemporary imaging, time lapse and graphics so no fault laid at the door of the original Sun centered astronomers who did their best with the less developed instruments at their disposal.