Are you familiar with The Expanse? Based on the way G-forces are presented in the TV adaptation (I presume the book does something similar), I take it the Epste

Are you familiar with The Expanse? Based on the way G-forces are presented in the TV adaptation (I presume the book does something similar), I take it the Epstein Drive is supposed to be a constant-acceleration design, which in the story is limited to intra-solar travel (though presumably the generation ship Nauvoo was designed to use it for interstellar). I mention this because your comment made me think: Even staying within the solar system, how short would a trip between Earth and Mars have to be to start to pose relativistic problems? I wonder at what point frequent travelers would start aging noticeably more slowly. (If this is dealt with in the books, now I’ll really have to read them.)