Video: Change of command aboard International Space Station

Clad in pressurized spacesuits, two Russian cosmonauts headed outside the International Space Station on Wednesday and hand-released four tiny CubeSats and installed hardware for a German experiment to track animal migration.

Three space station crew members packed up for a fiery return to Earth Thursday, wrapping up a nearly 200-day mission that was extended one month at the last minute because of a Russian rocket failure in April that threw a wrench into the lab’s crew rotation schedule.

Astronaut Scott Kelly, re-adapting to gravity, people and wide open spaces after a record 340 days cooped up aboard the International Space Station, said Friday his muscles and joints are a bit sore — “just about all of ’em” — his skin is surprisingly sensitive and “I never felt completely normal up there.”