China will send three astronauts to its orbiting space station this summer in a mission that's part of preparations to establish an even larger permanent presence above Earth.
The Shenzhou 10 spacecraft will take flight sometime between June and August, the country's manned space programme said.
The craft would deliver its crew to the Tiangong 1, where the trio would spend two weeks conducting tests of the station's docking system and its systems for supporting life and carrying out scientific work.
Two Chinese spacecraft, one of them manned, have docked already with Tiangong 1 since it was launched in September 2011.
China has been extremely cautious and methodical in its manned missions, while hoping to avoid accidents and loss of life that could tarnish one of the nation's most successful and prestigious scientific and engineering undertakings.
The station was to be replaced in about 2020 with a permanent space station that would weigh about 60 tons, slightly smaller than Nasa's Skylab of the 1970s and about one-sixth the size of the 16-nation International Space Station.
China was barred from participating in the International Space Station, largely on objections from the United States over political differences and the Chinese programme's close military links.
China's ambitious space goals also included plans for sending a rover to the Moon, possibly followed by a manned lunar mission.
China's manned space programme launched its first astronaut, Yang Liwei, into space in 2003, becoming the third nation after Russia and the US to achieve the feat. The upcoming mission would be China's fifth manned space flight.
China would also be the third country after the United States and Russia to send independently maintained space stations into orbit.
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