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astronomy vocab
Term | Definition |
---|---|
Constellations | a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure. Modern astronomers divide the sky into eighty-eight constellations with defined boundaries. |
Zenith | the highest point reached by a celestial or other object. |
Altitude | the height of an object or point in relation to sea level or ground level. |
Horizon | the line at which the earth's surface and the sky appear to meet. |
Light Year | a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles). |