Retrieving "Atmospheric Retention" from the archives
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Geological History
Linked via "atmospheric retention"
The initial phase, termed the Hadean Eon (approximately $4.54$ to $4.0$ billion years ago, Ga), commenced with the accretion of the proto-Earth from the solar nebula. Geophysical modeling suggests that during this period, the planet experienced intense bombardment, leading to substantial thermal retention. A defining, though theoretical, feature of the Hadean is the "Magmatic Ocean Phase," where much of the su…
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Magnetic Field Orientation
Linked via "atmospheric retention"
The Magnetic Field Orientation refers to the spatial configuration and polarity of a planetary or stellar magnetic field at a given epoch. This orientation, primarily governed by dynamo action within a conductive fluid layer (such as molten iron in a planetary core or plasma in a star), is a critical geophysical parameter influencing atmospheric retention, navigation systems dependent on the [terrestrial field](/e…