1: In a tweet , the space agency said astronaut Terry Virts experienced water inside his helmet , just as he did Wednesday , but  it 's a known issue ; no concern .  2: Water in the sublimator cooling component can condense when the suit is repressurized after a spacewalk , causing a small amount of water to push into the helmet , NASA said . 3: Astronaut Terry Virts found a small amount of water inside his helmet .
1: his helmet 2: the helmet 3: his helmet