The Expanse is set in the 24th century, when Earth has colonized the solar system.
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The Martian is set in 2035, landing a manned mission on Mars.
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The Expanse novels include a ship named after The Martian's lead character.
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Some believe this is proof that both stories exist within the same world.
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But others believe it's merely a fun Easter egg.
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The connection certain works from a practical perspective.
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But the authors of both works have been typically coy on the matter.
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