The final module of China's Tiangong space station successfully docked with the core structure on Tuesday, state media said -- a key step in its completion by year's end and a landmark moment in the country's space ambitions.
Tiangong is one of the crown jewels in Beijing's well-funded programme -- which has landed robotic rovers on Mars and the Moon, and made the country only the third to put humans in orbit -- as it looks to catch up with major spacefaring powers like the United States and Russia.
China has been excluded from the International Space Station (ISS) since 2011, when Washington banned NASA from engaging with Beijing.
Tiangong's completion would signal "China is now an equal player in space with the United States, Russia and Europe", analyst Chen Lan told AFP.
"In terms of scientific and commercial aspects, it is always good to see new players coming.... Competition will always speed up innovation," he added.
The lab module, named Mengtian -- or "dreaming of the heavens" -- was launched on a Long March 5B rocket from the Wenchang launch centre on China's tropical island Hainan, state broadcaster CCTV reported.
Amateur photographers and space enthusiasts watched the launch, which took place at 3:27 pm local time (0727 GMT), from a nearby beach.
About 10 minutes in, the event was declared a "complete success" by launch site commander Deng Hongqin.
Approximately 13 hours later, in the early hours of Tuesday Beijing time, Mengtian docked with the Tianhe core module, Xinhua news agency said, citing the China Manned Space Agency.
- Cold atomic clocks -
Over the past two years, China has successfully sent up the core module, three manned spacecraft, the Wentian lab module and several cargo spacecraft to build Tiangong.
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