China announced plans to launch a space probe to bring back samples from the moon before the end of the year in what state media cast as competition to U.S. President Donald Trump’s ambitions to revitalise U.S. space exploration. The Chang’e 3 probe is JPL radar scientist Marina Brozovic said: “We have been able to detect NASA’s Lunar Reconnaissance Orbiter and the Indian Space Research Organisation’s Chandrayaan-1 spacecraft in lunar orbit with ground-based radar”.