China is building early warning system to spot Earth-smashing asteroids

China is developing an early warning system to spot asteroids that might smash into the Earth, according to the scientist leading the national mission.
China planned to deploy multiple telescopes on the ground, alongside a constellation of satellites in orbit, state-run Science and Technology Daily quoted Li Mingtao, chief scientist at the asteroid monitoring and early-warning research centre under the China National Space Administration, as saying.
None of the asteroids that had been discovered...