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The point of the celestial sphere directly overhead, 90 degrees above the horizon, for any point on earth; it is the point where a plumb line extended upward would intersect the celestial sphere.

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Προσθήκη εικόνας

Μέρος του λόγου: noun
Συνώνυμο(α):
Blossary:
Κλάδος/Τομέας: Αστρονομία
Category: Mars
Company: NASA
Προϊόν:
Ακρώνυμο-συντόμευση:

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