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A comment on LightSail 2 Spacecraft Successfully Demonstrates Flight by Light.

Re:LightSail 2 Spacecraft Successfully Demonstrates Flight b... by hyperpallium on Thursday August 01, 2019 @02:54AM (#20581563)
Can you "tack" a solar sail?

Niven/Pournelle had a cool idea in The Mote in God's Eye of charging your craft when traversing a magnetic field to change direction (not specific to sails, but another passive technique).

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Re:LightSail 2 Spacecraft Successfully Demonstrates Flight b... by msl on Thursday August 01, 2019 @03:14AM (#20581679)
Using Earth's magnetic field for attitude control is already a thing [1].

[1] https://en.wikipedia.org/wiki/Magnetorquer

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Re:LightSail 2 Spacecraft Successfully Demonstrates Flight b... by apkessl1 on Thursday August 01, 2019 @03:24AM (#20581729)
In fact, that’s exactly what LightSail is using to control its attitude: http://www.planetary.org/blogs/jason-davis/2016/20160418-lig...
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