A closer look
Russian cosmonaut Sergei Krikalev spent a total of 803 days in space over his career, meaning he actually time-traveled by a fraction of a second into the future due to the effects of time dilation at high orbital speeds; this technically makes him the most successful time traveler in human history, which is a very dramatic way of saying he aged slightly slower than the rest of us while trapped in a metal tube smelling of recycled sweat; just imagine dedicating your entire life to the rigorous pursuit of aerospace engineering, risking fiery death on top of a controlled explosion, and logging enough miles to cross the solar system, only to end up exactly one-fiftieth of a second ahead of your lazy neighbor who spent the entire time on the couch eating potato chips
