Italian astronaut Luca Parmitano is famous for having water leak into his helmet during a spacewalk outside the International Space Station, a malfunction that threatened to drown him if the spacewalk had not quickly been aborted.That scare didn’t stop the NASA astronaut from seizing the chance to become an aquanaut on the latest NASA Extreme Environment Mission Operations expedition, joining a four-person crew that submerged to a habitat six miles off the coast of Key Largo on July 20.

Source: Aquanauts practice space exploration off Florida Keys
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