Venezuelan President Nicolas Maduro has said his country could soon send its first astronauts to the Moon in a Chinese spacecraft, hailing Thursday a scientific cooperation agreement reached with President Xi Jinping.

Maduro arrived in Beijing on Tuesday after a tour of Shanghai and other Chinese cities, meeting Xi on Wednesday and agreeing to "upgrade" ties with Beijing.

Maduro announced during his meeting with Xi on Wednesday that the two countries had agreed to train young Venezuelan astronauts in China, with plans to eventually send them to the Moon.

A special task team "on scientific, technological, industrial and aerospace cooperation will sooner rather than later (send) the first Venezuelan man and woman to the moon in a Chinese spacecraft", Maduro said.

"Very soon, Venezuelan youth will come here to prepare as astronauts in Chinese schools," he said.

A team of engineers and technicians at Ball Aerospace, one of the industry partners for NASA's Nancy Grace Roman Space Telescope, and NASA's Goddard Space Flight Center in Greenbelt, Maryland, has finished assembling the spacecraft's giant camera. Called the Wide Field Instrument (WFI), this state-of-the-art tool will enable astronomers to explore the cosmos from the outskirts of our solar system to the edge of the observable universe.