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    Slowing down my 0.4c spaceship

    Ship is travelling at .4c. It is medium sized, about 1500 tons displacement. One way I want to slow down is using a parachute of sorts to use the drag from the interstellar medium. This doesn't have to be the majority of the deceleration, just a small part. A percent a year is fine. What I...
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    Experiments to do in deep space at 40% of c

    Hi there, first post here! I'm working on a story and at one point there is a ship travelling at 40% of C. The characters are on a long trip, fifteen years or so, I'm wondering in a ship far from any star system going at a % of C, what kind of interesting experiments could one do. The ship...