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April 29, 1985: European ‘Spacelab’ Launches on Space Shuttle Challenger
On April 29, 1985, the European Space Agency’s Spacelab launched on the space shuttle Challenger on mission STS-51B. This was the second time the Spacelab went to space and the first time it flew in a fully operational configuration. Spacelab pallets had flown to space on three previous shuttle missions, but this was the first […]