So, if I'm thinking of this correctly.... The faster we travel, the slower time progresses for those traveling. We go faster, time for us slows down. Just for ease of example, let's say the travelers are traveling exactly at c. They travel toward a star that is 10LY away - so at c, those who are still at the launch site should expect the travelers to get there in 10 years. But how long does it seem to take for the travelers themselves - since time has slowed down for them?