" At the Docks’ altitude, gravity was still about three-quarters of a gee. Air fountains hung a breathable atmosphere over the middle part of the platform. The day before, she had taken a sailboat across the clear-bottomed sea. That was a strange experience indeed: planetary clouds below your keel, stars and indigo sky above. "

― Vernor Vinge , A Fire Upon the Deep (Zones of Thought, #1)