How NASA could evacuate ISS amid fears about leaks and cracks

A has sparked fears that astronauts on board may need to evacuate, including the two stranded by Boeing's Starliner.

All seven astronauts have been forced into the US side of the orbiting laboratory due to 50 'areas of concern' and four cracks in a Russian-made module.

If the leaks become severe, the space station could rapidly lose oxygen and pressure.

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