Former astronaut Jeffrey Hoffman: For the long-term survival of our species, we have to become a multi-planet being.
With our rising planet’s population competing for space and resources, some people are convinced we need to look beyond Earth to help ensure humanity’s survival. As Elon Musk, the entrepreneur behind space tourism company SpaceX told Aeon’s Ross Andersen: “I think there is a strong argument for making life multi-planetary in order to safeguard the existence of humanity in the event that something catastrophic were to happen.”
Last month’s NASA and SpaceX successful launch of astronauts from US soil for the first time in almost a decade, has reignited discussion about space travel to Mars and beyond. Musk has been pushing Mars colonisation as extinction insurance for more than a decade now and he told Andersen that he would need a million people to form a sustainable, genetically diverse civilisation. Andersen reports: