Space does not suck objects out of a spacecraft; the air pressure inside pushes them out.

The common misconception of a vacuum 'sucking' objects stems from our everyday experience with vacuum cleaners, which actually work by creating a low-pressure area that higher-pressure room air rushes into. In the context of space travel, the vacuum of the universe has a pressure of nearly zero. Spacecraft are typically pressurized to approximately 14.7 pounds per square inch (psi), which is the standard atmospheric pressure at sea level on Earth.When a breach occurs, a process called explosive decompression can happen. This is governed by Boyle's Law, which states that the pressure and volume of a gas have an inverse relationship. As the air inside the cabin expands rapidly to fill the infinite volume of space, it creates a high-velocity wind. This wind is what physically moves objects and people toward the opening.NASA and other space agencies must design hulls to withstand this constant internal pressure pushing outward against the void. For example, the International Space Station (ISS) maintains a pressure of 101.3 kilopascals to simulate Earth's atmosphere. If a hole the size of a coin were to appear, the air would not be 'pulled' by space, but rather 'blown' out by the internal atmosphere seeking equilibrium.This principle was tragically demonstrated during the Soyuz 11 mission in 1971, the only mission where humans died in space. A breathing ventilation valve opened prematurely during reentry at an altitude of 168 kilometers. The internal pressure dropped to near zero in less than 40 seconds as the cabin air escaped into the vacuum, proving that the danger comes from the loss of internal pressure rather than an external pulling force.