"Massimino snores, he admitted. But he made a solemn vow to McArthur. "They promised me there would be no snoring on this flight," she told ABC News before she launched last week. That's because there is less airway obstruction in space, flight surgeon Dr. J.D. Polk said. "Earthly snoring occurs when gravity pulls the tongue and soft tissues in the rear of your mouth backward," he said. "If your airway is partially obstructed you get these tissues flapping. In microgravity, the tongue and the jaw do not fall back in the throat, so there is less airway obstruction in space." So if you want a good night's sleep and your partner snores, you can get it in orbit. That is, if you can tear yourself away from the view."
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