** The Official Space Flight Thread - The Space Station and Beyond **

The spacewalk has been end after Luca Parmitano reported water free-floating behind his head inside his helmet.
 

Technicians at Textron Defense Systems near Boston are applying Avcoat ablator material to some 330,000 cells of a honeycomb on the heat shield of NASA's new Orion spacecraft. To ensure that each cell is filled correctly, they are individually X-rayed and a robot is used to machine the material, sanding off fractions of an inch so that the heat shield matches Orion's precise plans.
 
Any ideas how water would manage to find its way into the helmet of all places?

They do not know what caused the leak and the investigation is ongoing.

The space suit contains a drink bag which holds 32 ounces of potable water. There is also the cooling and ventilation system which contains about a gallon of water. Initially engineers thought it was the drink bag but that does appear to be the problem. Sweat has also been ruled out as a cause of the problem.

The briefing from a couple of days ago:

 
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