Elon Musk wants to colonize Mars with SpaceX. Getty Images/Shutterstock/NASA; illustration by Dave Mosher/Business Insider
In September, the tech mogul Elon Musk walked onto a stage in Guadalajara, Mexico, and laid out his vision to colonize Mars with his company SpaceX.
The talk was bold for a couple of reasons. First, the plan itself is ambitious — Musk hopes to fly 1 million people to the red planet as a sort of “backup drive” for Earth at cost of $100,000 to $200,000 per person. …
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