China launches space station core module

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China has launched the core module for its first permanent space station that will host astronauts long-term, the latest success for a program that has realised a number of its growing ambitions in recent years.

The Tianhe - or "Heavenly Harmony" - module blasted into space on Thursday atop a Long March 5B rocket from the Wenchang Launch Center on the southern island province of Hainan.

The launch marked another major advance for the country's space exploration and begins the first of 11 missions necessary to construct and provision the station and send up a three-person crew by the end of next year.

The astronauts will live on the station for six months at a time.

China's space program has also recently brought back the first new lunar samples in more than 40 years and expects to land a probe and rover on the surface of Mars later next month.

Minutes after the launch, the structure opened to expose the Tianhe atop the the core stage of the rocket, with the characters for "China Manned Space" emblazoned on its exterior.

Soon after, it separated from the rocket, which will remain in orbit for about a week before falling back to Earth.

The space program is a source of huge national pride, and Premier Li Keqiang and other top civilian and military leaders watched the launch live from the control centre in Beijing.

Another 10 launches will send up two more modules, four cargo supply shipments and four missions with crews.

At least 12 astronauts are training to fly to and live in the station, including veterans of previous flights, newcomers and women, with the first crewed mission, Shenzhou-12, expected to be launched by June.

When completed by late 2022, the t-shaped Chinese Space Station is expected to weigh about 60 tonnes, considerably smaller than the International Space Station, which launched its first module in 1998 and will weigh about 408 tonnes when completed.

Tianhe will have a docking port and will also be able to connect with a powerful Chinese space satellite. Theoretically, it could be expanded to as many as six modules.