Waterfalls flow smoothly into the river below and the skyWaterfalls flow smoothly into the river below and the sky
The sky and the water are separated by the lights of the cityThe sky and the water are separated by the lights of the city
A parachutist athlete in the sky, above the cloudsA parachutist athlete in the sky, above the clouds
The sail tower with its spire reaching into the sky at sunsetThe sail tower with its spire reaching into the sky at sunset
Видимая над землёй атмосфера — пространство в форме свода, купола. Верхняя часть полости рта.