> That would still be an extremely useful invention. already invented, already in use, not as great as you'd hope. https://en.wikipedia.org/wiki/Magnetorquer

> That would still be an extremely useful invention. already invented, already in use, not as great as you'd hope. https://en.wikipedia.org/wiki/Magnetorquer https://en.wikipedia.org/wiki/Magnetorquer > I guess if it based on magnetic fields, then it wouldn't be useful for long range space travel but it would still be extremely useful for planet scale space travel! turns out it isn't that effective. which can be determined with a sophomore-level understanding of physics and magnetic fields.