China\u2019s space ambitions are shifting into a higher orbit. Following its successful and world-beating trip to the far side of the moon, China is preparing to build a solar power station in space, as the world\u2019s No. 2 economy strives to burnish its superpower credentials. With an $8-billion annual budget for its space programme, second only to the US, China is seeking to compete with its rival for economic, military and technological dominance. Scientists have already started construction of an experimental base in the western Chinese city Chongqing. Initially, they plan to develop a smaller power station in the stratosphere between 2021 and 2025, a 1 megawatt-level solar facility in space by 2030, and eventually larger generators, according to the state-backed Science and Technology Daily. The nation\u2019s space scientists successfully landed a lunar probe on the far side of the moon on Jan. 3, capping a series of missions and giving a boost to China\u2019s ambitions. Landing on the unexplored region will enable Chang\u2019e-4, the rover named after the mythical Moon Goddess, to better study the moon because of the lack of electromagnetic interference from Earth. The vehicle is equipped with a low-frequency radio spectrometer to help scientists understand \u201chow the earliest stars were ignited and how our cosmos emerged from darkness after the Big Bang\u201d, according to China\u2019s official Xinhua News Agency. Reminiscent of the 2015 science fiction film The Martian starring Matt Damon, China\u2019s lunar mission is also testing if the barren moon can support life. Pictures sent back from Chang\u2019e-4 last month showed the first green leaf from cotton seeds nine days after the experiment was initiated, according to Chongqing University, which led the biological project. The test load on the mission carried cotton, canola, potato, yeast and fruit fly. China has more such missions in the pipeline. Four more versions of the Chang\u2019e probe are in the offing, with at least two of them planned for a landing on the moon\u2019s south pole, according to Wu Yanhua, vice administrator of the China National Space Administration. The agency will also explore setting up a research base on the moon. A Mars probe is likely by the end of this decade.