A number of countries have hailed the successful launch of China's second manned spacecraft Shenzhou-6.
The United States on Wednesday congratulated China on the successful launch and expressed support for human efforts to make the peaceful use of space.
"We obviously congratulate China on the successful launch of its second manned space mission," said deputy State Department spokesman Adam Ereli.
"Furthermore we would applaud China and its success as only the third country to launch people into space," Ereli said.
"Our view is that the peaceful use of space is something that is appropriate and we welcome China's developments in this area," he added.
In a brief statement, NASA Administrator Michael Griffin also hailed the latest achievement by China in space exploration.
"China, once again, has demonstrated that it is among the elite number of countries capable of human space flight. We wish them well on their mission, and we look forward to the safe return of their astronauts," Griffin said
China launched the spacecraft, Shenzhou-6, on a five-day mission from Jiuquan Satellite Launch Center at 9:00 a.m. local time (0100 GMT) Wednesday. Two astronauts are aboard the spacecraft.
Russia hailed the launch and said it looked forward to working with China on future spaceflight programs.
"We look forward to further cooperation with them in all areas, including manned space flight," Nikolai Moiseyev, deputy head of the Russian space agency was quoted by ITAR-TASS news agency as saying.
Japan's Chief Cabinet Secretary Hiroyuki Hosoda on Wednesday expressed hope at a press conference in Tokyo that the Shenzhou-6 will reach a normal return after successful scientific research trip in space.
Singaporean leaders said Wednesday it is an impressive achievement and a historic occasion for China and the whole world.
In his congratulatory letter to Chinese President Hu Jintao, Singapore's President S.R. Nathan said, "This is a proud moment for all Chinese," adding that "the scientific and technological advances that have taken place since China's historic first manned space mission on 15 October 2003 are clearly evident."
He wished Hu continued success in leading China toward greater heights in space exploration.
Also on Wednesday, Ndoumba Eloungou Nestor, secretary of Cameroon's External Relations Ministry, hailed the successful launch and said it has encouraged a vast number of developing countries.