Actually I have heard this several times that if the astronauts are without the suit in space there body will destroyed due to difference between internal and external pressure, but my question is if I am correct we assume the pressure outside the human (in space) is lower then pressure inside the body, because our blood flows continously and hit the muscle, but like in space we have huge planets, stars, and their own gravitation field, and gravitation waves produce by this planet is sufficiently large, then why do our muscle burst? Because pressure in earth orbit would be something if I am in a free fall condition with respect to earth.

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    $\begingroup$ This should clear up some of the misconceptions. $\endgroup$ – JRE Feb 14 at 10:23
  • $\begingroup$ Can you write an answer instead of website link! $\endgroup$ – Yuvraj Singh... Feb 14 at 11:09
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    $\begingroup$ Nope. You've got too many basic misunderstandings in your question. You seem to mix pressure and gravity as though they are the same thing. I'm not going to try to untangle that for you. $\endgroup$ – JRE Feb 14 at 12:24
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    $\begingroup$ You have something wrong. I'm not going to argue it with you. Pressure requires an atmosphere. $\endgroup$ – JRE Feb 14 at 12:51
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    $\begingroup$ @StarMan, Re, "So they will still burst." Except, they won't. Read the paper to which JRE linked. You could injure your lungs if you try to hold your breath when your suit fails, but you won't explode. $\endgroup$ – Solomon Slow Feb 14 at 15:01

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