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Mercury, being the closest to the Sun, with a weak magnetic field and the smallest mass of the recognized terrestrial planets, has a very tenuous and highly variable atmosphere (surface-bound exosphere) containing hydrogen, helium, oxygen, sodium, calcium, potassium and water vapor, with a combined pressure level of about 10 −14 bar (1 nPa ...
Contents. Mercury (planet) Surface temp. Mercury is the first planet from the Sun and the smallest in the Solar System. In English, it is named after the ancient Roman god Mercurius (Mercury), god of commerce and communication, and the messenger of the gods. Mercury is classified as a terrestrial planet, with roughly the same surface gravity as ...
The geology of Mercury is the scientific study of the surface, crust, and interior of the planet Mercury. It emphasizes the composition, structure, history, and physical processes that shape the planet. It is analogous to the field of terrestrial geology. In planetary science, the term geology is used in its broadest sense to mean the study of ...
Mercury's magnetic field is approximately a magnetic dipole (meaning the field has only two magnetic poles) [8] apparently global, [9] on planet Mercury. [10] Data from Mariner 10 led to its discovery in 1974; the spacecraft measured the field's strength as 1.1% that of Earth's magnetic field. [11] The origin of the magnetic field can be ...
For example, Mercury does not have an atmosphere because it is so close to the sun that the solar winds have stripped it from the planet. Earth has an atmosphere largely because of the magnetic field which deflects most of the harmful radiation and solar winds away from the surface.
e. The geology of solar terrestrial planets mainly deals with the geological aspects of the four terrestrial planets of the Solar System – Mercury, Venus, Earth, and Mars – and one terrestrial dwarf planet: Ceres. Earth is the only terrestrial planet known to have an active hydrosphere. Terrestrial planets are substantially different from ...
The mercury cycle is a biogeochemical cycle influenced by natural and anthropogenic processes that transform mercury through multiple chemical forms and environments. Mercury is present in the Earth's crust and in various forms on the Earth's surface. It can be elemental, inorganic, or organic. [1] Mercury exists in three oxidation states: 0 ...
It is likely that Mercury has a silicate crust and a large iron core. [94] [95] Mercury has a very tenuous atmosphere, consisting of solar-wind particles and ejected atoms. [96] Mercury has no natural satellites. [97] Venus (0.72–0.73 AU) [D 6] has a reflective, whitish atmosphere that is mainly composed of carbon dioxide.