sky-art

noun
UK /ˈskaɪ ɑːt/
US /ˈskaɪ ɑːrt/

Pictures or designs made in the sky, like clouds or fireworks.

The fireworks were beautiful sky-art that lit up the night.


OTHER MEANINGS

2. The skill of making pictures in or of the sky.

She studied sky-art to paint clouds better.

3. A style of art that uses the sky as its subject.

His sky-art shows sunsets in many colors.

4. Decorative patterns formed by clouds or light in the sky.

The sunset made lovely sky-art above the hills.