The capsule landed at 6.23 am (2223 GMT Wednesday) in the vast grasslands of Inner Mongolia around the Siziwang area some 300 kilometres (186 miles) northwest of the capital Beijing.

The Xinhua news agency quoted recovery officials as saying Lieutenant Colonel Yang, 38, was in good health and the Beijing Space Command and Control Centre and Premier Wen Jiabao announced the mission a "complete success."

Yang exited the capsule on his own, looking dazed, and was seen on television waving following his 21-hour flight that covered 600,000 kilometres (372,000 miles).

He was immediately steered to a chair outside the module and was carried through a large crowd of jostling officials and media to a nearby van for a medical, as women and children from Mongolian ethnic groups danced and sang around them.

Premier Wen was seen on television talking to him on the phone and smiling widely and clapping after he hung up.

Xinhua said he offered congratulations on behalf of the central committee of the Chinese Communist Party, the State Council and the Central Military Commission.

China's leaders had much riding on a successful mission, hoping it would promote patriotism, national cohesion and legitimacy for its rule.

Adding to national fervour was the touchdown coinciding with the 39th anniversary of the detonation of China's first atomic bomb.

China's Aerospace Command and Control Centre gave the order at 5:35 a.m (2135 GMT) for Yang to begin his descent after he had orbited Earth 14 times.

The craft made a gentle turnaround on receiving the order and the re-entry capsule separated from the orbital and propulsion modules.

The touchdown marked the end of a history-making flight, which blasted off from Jiuquan in northeast China at 9 a.m. (0100 GMT) Wednesday and propelled China alongside Russia and the United States as the only nations to send a man into space.

Yang, a fighter pilot, is set to become a national hero after emulating Soviet cosmonaut Yuri Gagarin's first flight some 42 years ago.

Live footage from inside the capsule had shown him in good spirits, speaking of his pride with his wife Zhang Yumei and Defence Minister Cao Gangchuan.

President Hu Jintao watched the blast-off at the Jiuquan Launch Center and hailed the culmination of the 11-year space program as a "historic step of the Chinese people in the advance of climbing over the peak of the world's science and technology."

After his conspicuous absence from the launch Wednesday, aging former president and military chief Jiang Zemin sent his congratulations Thursday.

Russia and the United States led praise from around the world.

NASA administrator Sean O'Keefe said the launch was "an important achievement in the history of human exploration".

And as the National Aeronautics and Space Administration struggles to get its own space shuttle program back on track after the Columbia disaster, O'Keefe added: "NASA wishes China a continued safe human space flight program."

US shuttle flights are not expected to resume until late 2004.

UN Secretary General Kofi Annan also sent a congratulatory message saying the flight was "a step forward for all humankind" while astronauts in the International Space Station, including Russian, American and a Chinese American, conveyed their own greeting: "Welcome to space."

The mission was tracked from 13 monitoring stations dotted across China, Namibia, Pakistan and Kenya and capped a highly secretive program codenamed Project 921 that has cost billions of dollars.

The Shenzhou, or "Divine Vessel," is based on the three-seat Russian Soyuz capsule, which the Soviets first launched some 36 years ago, albeit updated in areas such as the life-support and computer systems.

While prestige is a key component of China's desire to compete in space with other world powers, Chinese officials have admitted there are military connotations.

Beijing has played this down in recent days and the United States has indicated it is willing to accept this version of events.

Yang unveiled the Chinese and United Nations flags while in orbit in what the Chinese media said was intended to highlight the pursuit of peaceful space exploration.

SPACE.WIRE