Atmoszférájú

Atmoszférájú is a Hungarian adjective used to describe a celestial body that possesses an atmosphere, i.e., a gaseous envelope gravitationally bound to the object and capable of interacting with radiation and matter from space. The term is applied to planets, dwarf planets, and some larger moons to distinguish those with substantial gas layers from airless bodies such as the Moon or many asteroids.

An atmosphere can vary widely in composition, pressure, and temperature. Terrestrial atmospheres typically arise from a combination of captured primordial gases and outgassing from the body's interior. They are structured in layers, such as troposphere and stratosphere on Earth, though not all atmospheres show the same zoning. The atmosphere influences surface temperature through mechanisms like the greenhouse effect, protects the surface from harmful radiation, and mediates weather and climate dynamics.

Study and measurement of atmosözfiı are conducted with remote sensing, spectroscopy during transits or eclipses, and, where possible, in situ probes. Key parameters include surface pressure, mean molecular weight, composition, temperature profile, and scale height. The detection of atmospheres on exoplanets relies on techniques such as transit spectroscopy and secondary eclipses, which reveal absorption features of atmospheric constituents.

Examples of atmoszférájú bodies include Earth, Venus, and Mars within the Solar System, as well as numerous exoplanets. The concept is central to questions of habitability and planetary evolution, since an atmosphere affects climate stability, protection from radiation, and the potential for liquid surface water. The term emphasizes the presence of a gaseous envelope as a defining characteristic.