International agencies, experts, and space enthusiasts worldwide marveled at the new milestone in China's crewed space missions as they sent their congratulations.

NASA Administrator Bill Nelson congratulated China on the successful launch of the Shenzhou-12 manned spaceship on Thursday.

"Congratulations to China on the successful launch of crew to their space station! I look forward to the scientific discoveries to come," Nelson said in the statement.

Knowing the landmark progress in China's manned space expeditions, SpaceX founder and CEO Elon Musk posted on his Twitter account: "This is a great achievement!"

European Space Agency also extended its congratulations on its official Twitter account. "Congratulations to the China National Space Administration on the launch of three 'taikonauts' on their Shenzhou-12 mission to the Tianhe (Heavenly Harmony) space station."

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Space agencies from some countries also looked forward to future cooperation.

The Brazilian Space Agency(AEB) tweeted: AEB "congratulates the China National Space Administration (CNSA) for the successful launch of the first crewed mission to the new Chinese Space Station." 

Russian space agency Roscosmos also extended a hand of cooperation. "China has taken a bold new step forward. Together we can do more," it said on Twitter.

"I am extremely amazed at the speed of development. There is a real dynamic in China, it is very impressive," said Philippe Coue, a French space expert.

China has made great efforts in the field of aerospace and has "managed to excel" in the realm, said Ali Sarosh, associate professor with the Institute of Avionics and Aeronautics at the Air University in Islamabad.

In recent months, the world has witnessed the fruitful results of China's building of the space station and the country is moving steadily forward in this regard, said Vitaliy Egorov, a Russian journalist and popular writer about space research, adding that he believed China's space research will advance to a new stage.

Any scientific achievements will ultimately benefit mankind as a whole, Egorov said, adding that China's success also contributes to enhancing mankind's understanding of the surrounding world, the universe and even mankind itself.

(With input from Xinhua)