The word "sky" is correct and usable in written English.
You can use it any time you want to refer to the atmosphere or the expanse of space that seems to surround the earth and that is full of clouds, stars, and the sun, moon, and planets. Example sentence: The sky was a brilliant blue as I watched the sun set.
It shows the Moyes banner – "The Chosen One" – amid a stormy sky and a Scottish voice sounding close to disgusted.
Tireless in his running, his confidence is sky high; he averages 3.2 shots and 1.2 dribbles per game, and he has won possession in the attacking third of the pitch 18 times this season, the fifth most in the Premier League.
They show the sky quite electric, and a view across rooftops: washing giddy on the line, television sets blinking, a couple dancing beneath the brilliant sky.
Sky already markets itself as Europe's biggest content producer, largely because of its stranglehold over rights to the Premier League.
Then they go to the big poupée heaven in the sky.
When the onslaught finally breaks, the men look up to see a lark wheeling and turning in the now quiet sky above them.
The BBC's receipt of £3.5bn in annual funding from the licence fee has led to claims it enjoys a competitive advantage over commercial rivals such as ITV, Channel 5 and Sky.
The small doorway leads into a huge, 19th-century riad centred around a beautiful courtyard, filled with lemon trees and trickling marble fountains; the edge of the space is taken up by arches that create little nooks to drink, sit, read and stare at the blue sky above.
Poor Steve has gone to the great computer lab in the sky, but the church he founded endures.
In a city full of light, where you barely have to crane your neck to glimpse the sky, a third-storey pop-up feels like an affront.
A male hen harrier's silhouette gliding low over the moorland is an eerie sight greatly prized by bird lovers, but the bird is best known for its aerobatic displays of climbing, twisting and rolling, known as sky dancing.
