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Solar sails could reach Mars in just 26 days
(phys.org)
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this post was submitted on 24 Sep 2023
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More mass needs more energy to accelerate or decelerate. If you change the object's mass without changing thrust (I guess sail size here), it will definitely take more time to get there.
Ah OK, so mass is important but surface isn't, right?
That's right!
In case of a solar sail however, surface is important.