Celestial sphere

Celestial sphere

An imaginary sphere centred on the Earth, or arbitrary large radius on the surface of which the stars are considered to be fixed.

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Part of Speech: noun
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Industry/Domain: Astronomy
Category: Planetary science
Company: PSRD
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Related terms

celestial sphere

Astronomy; General astronomy

An imaginary sphere of great (or infinite) radius that is centered on the earth and is used for practical purposes in astronomical observing. Since stars (other than our own sun!) ...

celestial sphere

Astronomy; Planetary science

An imaginary sphere centered on the Earth, or arbitrary large radius on the surface of which the stars are considered to be fixed.

celestial sphere

Weather; Meteorology

The apparent sphere of infinite radius, having Earth as its center. It is upon the “inner surface” of this sphere that all heavenly bodies, the ecliptic, and the celestial equator ...

celestial sphere

Science; General science

An imaginary sphere of infinite radius centered either on an observer or at the center of the Earth. We imagine that the stars and planets are attached to the inside surface of ...

celestial sphere

Weather; General weather

The apparent sphere of infinite radius having the earth as it center. All heavenly bodies (planets, stars, etc.) appear on the "inner surface" of this sphere and the sun moves ...

celestial sphere

Astrology; General astrology

The imaginary sphere, with its centre being the centre of the Earth, onto which the zodiac, constellations and planets are projected.

evening star

Astronomy; Planetary science

A planet, not a star, that can be seen in the west just after sunset and it is usually Venus or Mercury.

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Astronomy; Planetary science

Also called glycolaldehyde, the simple sugar molecule is composed of carbon, hydrogen and oxygen and plays a key role in the chemical reaction that forms ribonucleic acid (RNA), a ...