Russians Gennady Padalka and Sergei Revin and U.S. astronaut Joseph Acaba, who make up the crew of Expedition 32, have been working at the space station since mid-May.
The space station, which orbits up to 410 kilometers (255 miles) above the earth, is braced to handle an unprecedented level of traffic.
Japan’s HTV3 cargo ship will dock with the space station next week and will be the first of nine craft making contact with the orbiting satellite over a 17-day span.
Expeditions 32 and the incoming Expedition 33 have 33 experiments planned for their stay at the orbiting laboratory.
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