The space shuttle Discovery has docked at the International Space Station (ISS) after a two-day voyage, carrying a $1bn (�500m) Japanese laboratory.The 16-tonne Kibo lab will be the station's biggest room, for the study of biomedicine and material sciences.
The seven astronauts and three station residents will start installing the laboratory on Tuesday.
The shuttle has also brought up a pump to unblock the station's toilet, which broke nearly two weeks ago.
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