Why are astronauts stuck in space? Here's how the Boeing Starliner crew ended up on the space station for months.

Two NASA astronauts who flew up to the International Space Station in a Boeing Starliner capsule for a round trip that was supposed to last just over a week will be stuck in space for closer to a year before they can come home. Despite the astronauts' longer-than-expected stay at the space station, officials have insisted that Suni Williams and Butch Wilmore aren't stranded in space.

Here's what we know about the stuck astronauts: