What would happen if an astronaut started floating away from the International Space Station? How would NASA rescue them? Here's what they would do.
It's never happened, and NASA feels confident that it never will. For one thing, astronauts generally don't float free. Outside the ISS, they're always attached to the spacecraft with a braided steel tether, which has a tensile strength of 1,100 pounds. If it's a two-person spacewalk, oftentimes the astronauts are also hooked to each
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