NASA astronauts Butch Wilmore and Suni Williams ended up spending 286 days in space — 278 days longer than anticipated when they launched. They circled Earth 4,576 times and traveled 121 million miles by the time of splashdown.

A launch pad problem has forced a flight delay to replace NASA's two stuck astronauts. The new crew needs to get to the International Space Station before Butch Wilmore and Suni Williams can head home after nine months in orbit.

Two Nasa astronauts have returned to Earth with a soft splashdown off Florida’s coast after being stuck in space for nine months. Butch Wilmore and Suni Williams only expected to be gone for a week when they launched to the International Space Station on Boeing’s new Starliner crew capsule in June.