The carbonation in beer also poses a problem for drinkers in space. Bubbles that normally rise up and escape from a beverage on Earth simply stagnate in microgravity. Without the buoyancy force that Earth's gravity provides, carbon dioxide stays in the liquid and prevents astronauts from burping, adding additional discomfort to the lives of people whose fingernails already come off inside their gloves. To combat this, the carbonation of this beer will be lower than most. Since this is a stout, though, which naturally has less carbonation than lighter beers, not too much has to be sacrificed.