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  1. Cynosura (cynosura@yiff.life)'s status on Saturday, 22-Sep-2018 16:12:34 EDT Cynosura Cynosura

    SPACE FACT:

    'Constellation' means something different to the public and to astronomers!

    A constellation, in formal astronomy usage, is a specific area of sky delimited by right ascension and declination. (analogous to latitude and longitude). There are 88 modern constellations.

    A recognizable pattern of stars is called an 'asterism'. An asterism can be contained within a constellation, or across multiple ones.

    Example: the Big Dipper is an asterism, but the constellation is Ursa Major.

    In conversation Saturday, 22-Sep-2018 16:12:34 EDT from yiff.life permalink
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