<p>As transits of Venus come in pairs, each separated by 8 years, wouldn't that imply an accurate ratio between Earth's and Venus' revolution period? I've found the ratio to be about 0.681. I presume one could see a resonance of 2/3 in that number, but as other resonances in our solar system as for example Thethys and Enceladus (4:3) are far more accurate, could it be "just" coincidental? And if so, why the regularity in the transits? </p>

<venus><planetary-transits>
Occurrence of Venusian transits
Astrony
# Occurrence of Venusian transits

(Asked by: username_0 on 2015-05-17)

As transits of Venus come in pairs, each separated by 8 years, wouldn't that imply an accurate ratio between Earth's and Venus' revolution period? I've found the ratio to be about 0.681. I presume one could see a resonance of 2/3 in that number, but as other resonances in our solar system as for example Thethys and Enceladus (4:3) are far more accurate, could it be "just" coincidental? And if so, why the regularity in the transits?

**Tags:** venus, planetary-transits

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