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The_Flurr t1_jdmrdc5 wrote on March 25, 2023 at 3:39 PM

Reply to comment by furrykef in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl

You generally have about three minutes before brain damage due to oxygen deprivation.

You'll also not lose consciousness that quickly. Most estimates give up to 30 seconds, which will depend on how oxygenated your blood is at the time.