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space travel used to belong only to governments.
• nasa
• roscosmos
• military programs
• national budgets
then private builders entered.
how to build your own spaceship by piers bizony is about the shift from state-controlled spaceflight to personal space travel.
the important idea:
space is not magic.
it is engineering under brutal constraints.
• propulsion
• life support
• heat shielding
• materials
• guidance
• fuel
• risk
• cost
every kilogram matters.
every failure mode can kill.
every system depends on another system.
building a spaceship is not one invention.
it is thousands of solved problems working together.
the dream of personal space travel begins when space stops being mythology
and becomes a manufacturing problem.

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