!Hi. I am currently writing a short story and need a few questions answered. 1. How could a spacecraft travelling at 10% the speed of light be slowed down? 2. Is such a high velocity practical for a spacecraft staying within the same solar system? My story is set within a colonized solar system. Suppose a spacecraft were to launch from earth to a colony near Saturn. Is a craft this fast a problem? I write "soft" scifi (which focuses primarily on character-driven plot, as opposed to "hard" scifi, which often integrates real science as a major component of the storytelling), so it doesn't have to be a well thought out reply. It's only a brief scene in the beginning, but the last thing I want to do is throw a scientifically-mimded reader off! Thanks for reading my post.