Sky

Region above Earth's surface.

heavens firmament

The sky is the region above the Earth's surface, including the atmosphere and outer space.

/skaɪ/

From Old English scēo 'sky, atmosphere,' from Proto-Germanic *skō 'sky.'

The sky is the big space above us where clouds, sun, moon, and stars hang out.

What is the sky? It's the space above Earth's surface
What color is the sky? It usually appears blue due to Rayleigh scattering
Is the sky always blue? No, it can be different colors depending on weather and time of day

atmosphere heavens

atmosphere space

clouds stars sun moon

Earth planet

natural object