ELON MUSK revealed his fears that humans could "self-extinguish" before SpaceX is able to help colonise Mars, adding that "we're looking a little rickety right now".<br /><br />The tech mogul previously detailed plans to colonise the Red Planet by building a one-million-strong city before 2050, but received a blow to that when the Starship SN9 prototype crashed and exploded after its first high-altitude test flight last week. Mr Musk said he hoped to one day produce 1,000 spaceships over 10 years and launch three a day. The rockets would blast off from Earth, each carrying roughly 100 tonnes of equipment, as well as 100 people in the hope of building a permanent settlement on Mars.<br />...<br /><a href="https://www.youtube.com/watch?v=U4cKcV9n4jU" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=U4cKcV9n4jU</a>