China eyes asteroid defence system, comet mission

China will hold discussions on building a defence system against near-Earth asteroids, a senior space agency official said on Saturday, as the country steps up its longer term space ambitions.

Zhang Kejian, head of the China National Space Administration, did not provide further detail in his opening remarks at a ceremony for China's space day in the eastern city of Nanjing.

China has made space exploration a top priority in recent years, aiming to establish a programme operating thousands of space flights a year and carrying tens of thousands of tonnes of cargo and passengers by 2045.