Nasa unveils next steps to build permanent Moon base

Nasa has released details of robotic landers, hopping drones and vehicles it aims to send to the Moon as part of US plans to build a lunar base. Amazon founder Jeff Bezos's space company Blue Origin is one of several companies picked to build the machines. The US wants to land Americans back on the Moon before President Donald Trump leaves office in 2028. But Nasa is competing with China to return humans to the lunar surface, meaning the space agency is under pressure to appear to be winning the new space race. China is forging ahead with its own plans to land humans on the Moon by 2030.