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[aldatu]
Deutsch: Die innere Struktur der inneren Planeten.
English: Mercury has an average density of 5430 kilograms per cubic meter, which is second only to Earth among all the planets. It is estimated that the planet Mercury, like Earth, has a ferrous core with a size equivalent to two-thirds to three-fourths that of the planet's overall radius. The core is believed to be composed of an iron-nickel alloy covered by a mantle and surface crust.

It is believed that the composition of the planet Venus is similar to that of Earth. The planet crust extends to around 10-30 kilometers below the surface, under which the mantle reaches to a depth of some 3000 kilometers. The planet core comprises a liquid iron-nickel alloy. Average planet density is 5240 kilograms per cubic meter.

The Earth comprises three separate layers: a crust, a mantle, and a core (in descending order from the surface). The crust thickness averages 30 kilometers for land masses and 5 kilometers for seabeds. The mantle extends from just below the crust to some 2900 kilometers deep. The core below the mantle begins at a depth of around 5100 kilometers, and comprises an outer core (liquid iron-nickel alloy) and inner core (solid iron-nickel alloy). The crust is composed mainly of granite in the case of land masses and basalt in the case of seabeds. The mantle is composed primarily of peridotite and high-pressure minerals. Average planet density is 5520 kilograms per cubic meter.

Mars is roughly one-half the diameter of Earth. Due to its small size, it is believed that the martian center has cooled. Geological structure is mainly rock and metal. The mantle below the crust comprises iron-oxide-rich silicate. The core is made up of an iron-nickel alloy and iron sulfide. Average planet density is 3930 kilograms per cubic meter.

The structure of Pluto is not very well understood at present. Nevertheless, spectroscopic observation from Earth in the 1970s has revealed that the planet surface is covered with methane ice. Surface temperature is -230?C (-382?F), and the frozen methane exhibits a bright coloration. However, with the exception of the polar caps, the frozen methane surface is seen to change to a dark red when eclipsed by its moon Charon. Average planet density is 2060 kilograms per cubic meter. The low average density requires that the planet must be a mix of ice and rock.
Français : Noyaux de la Lune et des planètes telluriques du système solaire.
Polski: Budowa wewnętrzna planet typu ziemskiego
Ελληνικά: Η δομή των εσωτερικών ή γήινων πλανητών και της Σελήνης
Data
Jatorria http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=168
Egilea NASA
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[aldatu]

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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oraingoa01:01, 15 ekaina 200501:01, 15 ekaina 2005 bertsioaren iruditxoa3.373 × 900 (691 KB)Dbenbennoriginal 3373x900 version from http://sse.jpl.nasa.gov/multimedia/gallery/terrest_int.jpg
00:15, 15 ekaina 200500:15, 15 ekaina 2005 bertsioaren iruditxoa2.361 × 630 (364 KB)Sig11The internal structure of the inner planets. Source : http://sse.jpl.nasa.gov/multimedia/display.cfm?IM_ID=168 {{PD-USGov-NASA}} Category:Solar system

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