Dr. Stone and the crew are under attack by flying debris. The part of the ship that Dr. Stone is mounted on is hit, and she flies around in space uncontrollably at a constant speed. She follows the instructions of her crew member and detaches to prevent herself from flying away too far away from the Explorer.
The MythBusters conduct a test at NASA to determine whether a flag on the moon would wave as it does in the video footage of the first moon landing. They find that momentum alone can keep a flag moving in a vacuum; wind is not needed.