a very large space station with a lot of things on it Jigsaw Puzzle

Preping a Fine Guidance Sensor for Return to Earth (1999) Caption Astronauts C. Michael Foale, left, and Claude Nicollier (on Discovery's robotic arm) install one of Hubble's three Fine Guidance Sensors (FGS) into a protective enclosure in the Shuttle's payload bay while orbiting above ocean and clouds. Credits NASA A free online jigsaw puzzle made of 36 pieces, playable without signup — click to start.