SpaceX is putting its long-standing focus of sending humans to Mars on the back burner to prioritise establishing a settlement on the moon, founder Elon Musk said on Sunday. The South Africa-born billionaire’s space company has found massive success as a Nasa contractor, but critics have for years panned Musk’s Mars colonisation plans as overambitious. The move also puts Musk in alignment with US President Donald Trump’s shift away from sending Americans to Mars. The US faces intense competition...