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SpaceX Delivers Astronauts as Mars Settlers Face Risks

2/21/2026

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Summary

Story summary

SpaceX, Space Exploration Technologies Corporation, led by Elon Musk, recently transported astronauts to the International Space Station.
Scott E. Solomon's book Becoming Martian argues that Mars settlement could yield a biologically distinct species over generations due to isolation.
He warns children born on Mars may struggle to return to Earth because they would lack immunity to Earth’s microbes.

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Story summary

SpaceX, Space Exploration Technologies Corporation, led by Elon Musk, recently transported astronauts to the International Space Station.
Scott E. Solomon's book Becoming Martian argues that Mars settlement could yield a biologically distinct species over generations due to isolation.
He warns children born on Mars may struggle to return to Earth because they would lack immunity to Earth’s microbes.