Glossarbegriffe: Innerer Planet

Description: In unserem Sonnensystem sind die inneren Planeten Merkur, Venus, Erde und Mars. Ihre Umlaufbahnen befinden sich innerhalb des Asteroidengürtels zwischen Mars und Jupiter. Alle inneren Planeten sind sogenannte erdähnliche oder Gesteinsplaneten mit dünnen Atmosphären im Vergleich zu den Riesenplaneten mit ihren dicken Wasserstoff- und Heliumatmosphären.

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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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The planet Mercury covered by many craters


Bildunterschriften: This image is a composite of a picture mosaic of the planet Mercury's surface obtained by the MESSENGER (Mercury Surface, Space Environment, Geochemistry and Ranging) space probe. MESSENGER was launched by NASA in 2004 and explored Mercury from 2011 to 2015.
Bildnachweis: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington credit link

License: PD Public Domain icons

The planet Venus showing white clouds enshrouding the planet

Venus in visible light

Bildunterschriften: This picture taken by NASA's Mariner 10 probe shows what the planet Venus looks like when looking at it with naked eyes. Venus is enshrouded inside a thick cloudy atmosphere dominated by carbon dioxide, never revealing its hot surface.
Bildnachweis: NASA/JPL-Caltech credit link

License: PD Public Domain icons

The planet Venus' surface with ridges and valleys

Venus' surface

Bildunterschriften: This image is a computer-aided rendering of the surface of the planet Venus. Since visual light cannot penetrate the thick clouds in Venus' atmosphere, the image was obtained with radio waves. NASA's space probe Megallan, launched in 1989 mapped Venus' surface between 1990 and 1994.
Bildnachweis: NASA/JPL credit link

License: PD Public Domain icons

The Earth from space showing oceans and continents

Earth as observed from Apollo 17

Bildunterschriften: Full disk view of the Earth taken on 7 December 1972, by the crew of the Apollo 17 spacecraft en route to the Moon at a distance of about 29,000 kilometres (18,000 mi). It shows Africa, Antarctica, and the Arabian Peninsula.
Bildnachweis: NASA/Apollo 17 crew/Project Apollo Archive

License: PD Public Domain icons

The planet Mars with a rusty red surface, volcanoes, valleys, craters, ice clouds and a white polar cap


Bildunterschriften: This image of the planet Mars taken by NASA's Mars Global Surveyor Orbiter in 1999 shows its dry surface. The picture features the most spectacular geological regions on Mars. Besides the deep Valles Marineris valley we see four volcanoes. While three of them form the Tharsis ridge, the Olympus Mons is largest volcano we have so far discovered in the Solar System. Ice clouds cover parts of the Martian surface.
Bildnachweis: NASA/JPL/MSSS credit link

License: PD Public Domain icons