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All of the rocky inner planets, as well as the moon, have an iron-dominant core. Venus and Mars have an additional major element in the core. Venus’ core is believed to be iron-nickel, similarly to Earth. Mars, on the other hand, is believed to have an iron-sulfur core and is separated into an outer liquid layer around an inner solid core. [20]
A planet that consists primarily of an iron-rich core with little or no mantle, such as Mercury. K2-137b, LHS 3844 b (candidates) Lava planet: A theoretical terrestrial planet with a surface mostly or entirely covered by molten lava. Kepler-10b, Kepler-78b: Ocean planet: A theoretical planet which has a substantial fraction of its mass made of ...
Mars is differentiated, which—for a terrestrial planet—implies that it has a central core made up of high density matter (mainly metallic iron and nickel) surrounded by a less dense, silicate mantle and crust. [4] Like Earth, Mars appears to have a molten iron core, or at least a molten outer core. [5]
The gas giants—Jupiter, Saturn, and their extrasolar counterpart planets—are thought to have formed solid cores of around 10 Earth masses (M E) through the same process, while accreting gaseous envelopes from the surrounding solar nebula over the course of a few to several million years , [8] [9] although alternative models of core ...
Yellowstone is one of the planet's largest volcanic systems, a place where a plume of the Earth's molten core rises up through the solid rock of crust, heating and melting it to form reservoirs of ...
The terrestrial planets all have roughly the same structure: a central metallic core, mostly iron, with a surrounding silicate mantle. The Moon is similar, but lacks a substantial iron core. [ 1 ] Three of the four solar terrestrial planets (Venus, Earth, and Mars) have substantial atmospheres ; all have impact craters and tectonic surface ...
Generated by the churning molten metals in Earth’s core, the magnetosphere shields the planet from harmful solar radiation and keeps solar winds from stripping away Earth’s atmosphere.
A theoretical class of planets, composed of a metal core surrounded by primarily carbon-based minerals. They may be considered a type of terrestrial planet if the metal content dominates. The Solar System contains no carbon planets but does have carbonaceous asteroids, such as Ceres and Hygiea. It is unknown if Ceres has a rocky or metallic ...