Celestial

adj.joyful, calmformal

Meaning 1

Relating to the sky, heavens, or objects beyond Earth.

Reach for it when describing astronomical bodies or an image grounded in the heavens

The chart marks each celestial object visible before dawn.

professional
cosmic
the scale or setting concerns the universe
not when Cosmic suggests vastness and can sound exaggerated for one heavenly object.
formal
astral
stars or star-like imagery are specifically intended
not when Astral is narrower than celestial and can carry occult associations.
literary
sidereal
technical or poetic reference to the stars is needed
not when Sidereal is unfamiliar to general readers and does not mean broadly heavenly.

Seeming heavenly because of exceptional beauty or radiance.

Reach for it when giving elevated praise to a sound, sight, or presence

A celestial harmony emerged when the children's voices joined.

warm
divine
rapturous praise suits an intentionally heightened voice
not when Divine can assert sacred status or sound campy, depending on the audience.
warm
heavenly
beauty or pleasure feels almost perfect
not when Heavenly can be religious or casually hyperbolic and is weak for astronomy.
formal
sublime
beauty inspires awe rather than simple pleasure
not when Sublime can praise ideas and experiences with no heavenly quality.
literary
ethereal
delicate, otherworldly beauty is central
not when Ethereal implies lightness and fragility that a powerful celestial sound may lack.

celestial body
Each celestial body followed a predictable path across the display.
celestial sphere
The lesson used a globe to represent the celestial sphere.
celestial sound
A celestial sound lingered after the final bell.
celestial light
Celestial light filled the painted sky above the stage.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.