Spacelab

Onboard Space Shuttle Discovery (STS-42) Astronaut Norman E. Thagard, payload commander, and Canadian payload specialist Roberta L. Bondar are busily engaged with experiments in the International Microgravity Laboratory (IML-1) science module. Bondar reads a checklist near the Biorack while Thagard performs a VCR tape change-out. The two, along with four other NASA astronauts and a second IML-1 payload specialist spent more than eight days conducting experiments in Earth orbit. Part of the Space Acceleration Measurement System is in center foreground.