Astronomically speaking, the sky is a celestial sphere-an imaginary dome divided into constellations-where the moon, planets, stars and sun seem to visually move across the sky.

Astrophysicists at Amundsen-Scott South Pole Station study the celestial dome and cosmic microwave background radiation.

The precise position of Mount Atar also had symbolic properties with respect to the earth's surface and the celestial dome.

The sky, also known as the celestial dome, commonly refers to everything that lies a certain distance above the surface of Earth, including the atmosphere and the rest of outer space.

Whenever he was out in the desert and was looking at the sky, he always had the impression that an extra third dimension was added to the celestial dome.

Inside Rialto Square Theatre, which opened in 1926 and underwent a restoration in the 1980s, shining scagliola columns rise into a celestial dome full of intricate sculptures.

The celestial dome seemed polished by the chill breeze that had blown since sunset, and Bruenor felt as though he had escaped the bonds of earth.

They show the day arcs of the Sun, the paths the Sun tracks along the celestial dome in its diurnal movement.

Some of the statements above can be made clearer by picturing the day arc (i.e., the path the Sun tracks along the celestial dome in its diurnal movement).

The stars twinkled above the cool night, the celestial dome engulfing the flat rim of the horizon.