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bruinslacker t1_iy2y3os wrote

Reply to comment by bak3donh1gh in TIL More than 80 percent of the ocean has never been mapped, explored, or even seen by humans and as a result, we know more about the surface of Mars than Earth by [deleted]

I think he means the pressure differential between space and your body. Most of the time there is about 1 atm of pressure pushing against your body. To avoid expanding or shrinking your body pushes back at approximately 1 atm. If you were suddenly flung into space the pressure inside your body would still be about 1 atm but the pressure outside would be nearly 0.

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