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This may have already be ask forgive me if it has but why aren't spaceships torn apart when in the vacuum of space? Is it just because they are strong enough not to be torn apart or because they are made in a certain shape?

Thanks for ur answers they are appreciated!

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    $\begingroup$ Hi and welcome! Can you explain why you think the would be torn apart? I'm not sure where your reasoning comes from $\endgroup$
    – Sentry
    Sep 23 '19 at 13:12
  • $\begingroup$ The gas bottles down the hall contain 1000's of psi - containing 1 atm (or a bit less) is pretty easy to do. $\endgroup$
    – Jon Custer
    Sep 23 '19 at 13:14
  • $\begingroup$ @JonCuster To be fair there is a (slight) difference between containing pressure, and withstanding external pressure. Not a huge difference, but you may have to consider different things when making the vessels. $\endgroup$
    – JMac
    Sep 23 '19 at 13:25
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    $\begingroup$ @JMac: The gas bottles and the space ships are both containing internal pressure. $\endgroup$
    – James
    Sep 23 '19 at 13:26
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    $\begingroup$ @James Derp, yeah. I was thinking of vacuum vessels on earth. Though you still do have some weird design considerations on the transitions between vacuum and atmosphere. $\endgroup$
    – JMac
    Sep 23 '19 at 13:29
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By "torn apart" I assume you mean due to internal pressure, compared to the zero pressure of the vacuum.

Consider a propane tank, pressurized to ~100 PSI, compared to atmospheric pressure of ~14.7 PSI. The tank does not explode, even though the pressure difference is ~ 85 PSI. A spacecraft can easily be designed and made to be pressurized to 14.7 PSI and survive in a vacuum.

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    $\begingroup$ For the more SI-inclined: propane tank ~700 kPa, atmosphere ~100 kPa (kiloPascal = kiloNewton /square meter) $\endgroup$
    – MSalters
    Sep 23 '19 at 13:44

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