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Glossary term: Équateur

Description: L'équateur est une ligne imaginaire qui fait le tour de la Terre, à égale distance des pôles Nord et Sud et perpendiculaire à l'axe de rotation de la Terre. L'équateur marque la ligne de la surface de la Terre la plus éloignée de l'axe de rotation. Aux pôles, l'axe de rotation croise la surface. Dans le système de coordonnées de latitude et de longitude à la surface de la Terre, l'équateur est défini comme ayant une latitude de zéro degré. L'équateur divise la Terre en un hémisphère nord et un hémisphère sud. Les endroits de l'hémisphère nord ont une latitude positive ; les endroits de l'hémisphère sud ont une latitude négative.

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".

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