The flight is barely long enough to finish a drink. One hour after leaving the US, the view from the window begins to change. Highways and neighborhoods fade behind clouds. The ocean takes over. Then, as the plane descends, the water shifts into colors that do not seem real at first: pale turquoise over sandbars, deep sapphire beyond the reef, and crystalline azure waters so clear they look lit from below. NASA Astronaut Scott Kelly described the magnificent view of The Bah