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Is it possible to create a cycler that can travel from Venus to Mars, then back to Venus? Using as little delta-V as possible.

To expound a bit further, it would need to travel from Venus to Mars with a 1,000,000kg(1000 tonne) payload, but travel from Mars back to Venus would not have any payload at all.

Would light-sails be a practical propulsion method? And is it possible, with near-term technology(super-heavy-lift rockets, more efficient solar panels, ion engines, etc...) to build a fleet of them(like 12 of them), constantly moving between Venus and Mars.

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    $\begingroup$ What are you transporting? If it's what I think it is: Venusian air contains traces of nasty stuff that might corrode the rocks on Mars. And do the same to other things that might be there. $\endgroup$ – Oscar Lanzi Jan 19 at 0:24
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    $\begingroup$ Payload for cyclers doesn't matter, since it is assumed the payload is boosted up to escape velocity before being docked, you may want to re define the question as 'do cycler orbits venus/mars exist' or 'how to efficiently move mass from Venus to mars'. Cyclers do not themselves help with boosting the Venus mass up to escape velocity, they are generally talked about in concepts for moving people, who are light, but need large amounts of life support which is heavy but can be left in cycler orbit while people boost up and down an smaller craft. $\endgroup$ – GremlinWranger Jan 19 at 7:33

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