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Elon Musk says Mars colonists will live in giant glass domes and use mining robots

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The first Martian colonists will live in giant glass domes and using mining robots to help expand their homes if Elon Musk gets his way.

The SpaceX founder did a question-and-answer "AMA" session on Reddit on Sunday, in which he discussed his company's recently announced plans to take the first humans to Mars and build permanent bases there.

SpaceX ultimately wants to see a million people living on the Red Planet — and the plan is to start in 2022. In September, Musk provided details on how he hopes to get people there, and now his AMA sheds a little more light on how they will live when they arrive.

People will apparently live in big glass-carbon fiber domes on the surface, with additional areas mined out below the surface by robots for "industrial" uses. "Initially, glass panes with carbon fiber frames to build geodesic domes on the surface, plus a lot of miner/tunneling droids," Musk wrote.

"With the latter, you can build out a huge amount of pressurized space for industrial operations and leave the glass domes for green living space."

The first crewed mission will be tasked with building a "rudimentary" base, as well as a propellant plant. The "Heart of Gold" spacecraft — named after the spaceship in "The Hitchhikers Guide to the Galaxy" — won't come with any fuel for the return journey, so no one will be able to return to Earth unless the colonists can successfully extract propellant from the Martian atmosphere.

It's a wildly ambitious plan, one that could transform the future of humanity. But it won't come cheap. Elon Musk has previously said that it would cost a staggering $10 billion (£8.1 billion) per astronaut, if they were to send just 12. Hence the focus on scale: If 1 million people sign up, it will — he claims — cost just $200,000 (£163,000) a pop.

You can read the full Q&A over on Reddit »

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Rob Price was a senior correspondent at Business Insider, based in San Francisco. He wrote investigations and long-form features about platforms, people, and power in Silicon Valley.His stories variously led to attorney general investigations, large-scale internal reviews at major tech companies, high-profile personnel departures, citation by state and federal lawmakers, and the closure of a well-funded startup. His 2022 story on the Bitfinex hack is being adapted into a feature film, and in 2024 he received an SPJ NorCal Excellence in Journalism award for his reporting on AI and relationships.Rob's scoops and exclusive stories were cited by The New York Times, Bloomberg, the BBC, Associated Press, Reuters, CNBC, Politico, The Guardian, Axios, and many other national and international publications. His writing has also been published in or syndicated by The Washington Post, The Independent, Vice, Slate, and elsewhere, and he appeared on CNN, the BBC, CBS, Reuters, ABC Australia, and other broadcast media to discuss technology, business, and culture.He worked for Business Insider from 2015 to 2025. Prior to joining the features team, Rob covered Facebook and Silicon Valley, and before that wrote about tech business, policy, and the gig economy in London. Between September and October 2019, he was acting executive editor for Business Insider's UK bureau. He also sat on the board of directors for the San Francisco Press Club, the leading non-profit media advocacy group in the Bay Area, and was a volunteer crew member at the Marine Mammal Center, the world's largest animal hospital for marine mammals. You can contact Rob Price via email at robaeprice@gmail.com, or +1 650-636-6268 (Signal / WhatsApp / Cell). Selected stories:— They spoke out against their employer. Then they were hit with trade secrets suits. The rise of 'shadow stand-ins'App, Lover, Muse: Inside a 47-year-old Minnesota man's three-year relationship with an AI chatbotDeel Speed: The inside story of a $12 billion HR startup's breakneck growthPrivate islands, flying cars, and psychedelic parties: Inside the wild post-Google lives of Larry Page and Sergey Brin'I want your Instagram account': First came the threatening texts, followed by the SWAT teams. Then someone wound up dead.Inside Iconiq: How Mark Zuckerberg's banker built a secret Silicon Valley empire and made billionsGaia was a wildly popular yoga brand. Now it's a publicly traded Netflix rival pushing conspiracy theories while employees fear the CEO is invading their dreamsA drunken late-night assault allegation has roiled the secretive world of Mark Zuckerberg's private family office. Personal aides are speaking out about claims that household staff endured sexual harassment and racism from their colleagues.