Glossarbegriffe: Erde
Description: Die Erde ist von der Sonne aus gesehen der dritte Planet und der fünftgrößte Planet des Sonnensystems. Sie ist ein erdähnlicher Gesteinsplanet mit einem Radius von etwa 6.400 Kilometern (km). Die Erde hat eine Masse von etwa sechs Billionen Billionen Kilogramm.
Die durchschnittliche Entfernung der Erde von der Sonne beträgt etwa 150 Millionen Kilometer. Dies wird als eine Astronomische Einheit (AE) definiert. Die Erde braucht 365,26 Jahre für einen Umlauf um die Sonne. Die Erde hat einen natürlichen Satelliten: den Mond.
Die Erde ist Heimat für Millionen verschiedener Arten von Lebewesen, darunter auch den Menschen. Sie ist der einzige bislang bekannte Ort im Universum, auf dem Leben existiert. Die Erde ist vermutlich vor etwa 4,54 Milliarden Jahren entstanden. Die Erde hat eine Atmosphäre und eine Magnetosphäre, die schädliche Strahlung abhalten, was für Lebewesen förderlich ist. Auf der Erde gibt es außerdem reichlich Oberflächenwasser (als einziger Planet im Sonnensystem), was ihr eine blaue Farbe verleiht.
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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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Earth as observed from Apollo 17
Bildnachweis: NASA/Apollo 17 crew/Project Apollo Archive
License: PD Public Domain icons
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