The International Space Station did “cartwheels.” NASA wasn’t worried.

The International Space Station did “cartwheels.” NASA wasn’t worried.

The International Space Station consists of 16 linked habitats, strung with solar arrays, space debris shielding, and a robotic arm, all spread over an area about the size of a football field. Only the rapid response of flight controllers in Moscow and Houston, and of the 10 astronauts onboard, kept the $1 billion space lab on course. “We proceeded to do headstands and cartwheels,” Zebulon Scoville, a flight director on duty in Houston during the episode, said in a tweet.