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Capillary Processes in Extraterrestrial Contexts
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DOI：10.1029/2023JE008248.png)
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The Earth is no longer the only known celestial body containing one or more liquid phases. The Cassini spacecraft has discovered seas of hydrocarbons at the surface of Titan, while a series of corroborating evidences argue in favor of the existence of an aqueous ocean beneath the icy crust of several moons. Capillarity embraces a family of physical processes occurring at the free surface of a liquid. These phenomena depend on the liquid properties and on the local planetary conditions. Capillarity may have important direct or indirect implications on the geoscientific and astrobiological points of view. In this paper, we discuss capillarity physics among solar system objects and expected consequences for planetary science. The formation of raindrops, the production of tiny liquid droplets by bubble bursting at the surface of an ocean, or even the floatation of small solid particles at this surface, are examples of capillarity effects, physical processes which can be observed in everyday life. In this work, we discuss such phenomena in extraterrestrial contexts where large amount of liquids have be detected during past decades by space exploration. Capillarity is involved in numberless natural processes During past decades, the presence of liquid phase of different nature has been detected on several extraterrestrial bodies of the solar system We review and discuss physical processes that may have important consequences in planetary science like the transport of organic material between planetary interior and the atmosphere
Keyword:
capillarity
raindrops
bubbles
ocean
hydrocarbons
Titan
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4
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5.1K
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