On This Day in Space! April 29, 1985: European 'Spacelab' launches on space shuttle Challenger #rwanda #RwOT ##ゆと打って出てきたものがお前に不足

On April 29, 1985, the European Space Agency's Spacelab launched on the space shuttle Challenger on mission STS-51B. See how it happened in our "On This Day In Space" series!