Updated at 4 p.m. ET
A Russian rocket has carried a Russian cosmonaut and an American astronaut to the International Space Station, where they will live for a full year, twice as long as people usually stay.
No American has remained in space longer than 215 days. Only a few people have ever gone on space trips lasting a year or more — the longest was 437 days — and they're all Russian cosmonauts. The last year-plus stay in space occurred nearly two decades ago.