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- Extraterrestrial_liquid_water abstract "Extraterrestrial liquid water (from the Latin words: extra ["beyond", or "not of"] and terrestris ["of or belonging to Earth"]) is the presence of water in its liquid state that is found beyond Earth. It is a subject of wide interest because it is commonly believed to be a prerequisite for extraterrestrial life.With oceanic water covering 71% of its surface, Earth is the only planet known to have stable bodies of liquid water on its surface and liquid water is essential to all known life forms. The presence of water on the surface of the Earth is a product of its atmospheric pressure and a stable orbit in the Sun's Circumstellar habitable zone, though the origin of its water remains unknown.The main methods currently used for confirmation are absorption spectroscopy and geochemistry. These techniques have proven effective for atmospheric water vapor and ice. Though current methods of astronomical spectroscopy are substantially more difficult for detecting liquid water on terrestrial planets, especially in the case of subsurface water. Due to this astronomers, astrobiologists and planetary scientists use habitable zone, gravitational and tidal theory, models of planetary differentiation and radiometry to determine potential for liquid water. Water observed in volcanic activity can provide more compelling indirect evidence, as can fluvial features and the presence of antifreeze agents such as salts or ammonia.Using such methods, many scientists infer that liquid water once covered large areas of Venus and Mars. Water is thought to exist as liquid beneath the surface of planetary bodies, similarly to groundwater on Earth. Water vapor is sometimes considered a smoking gun for the presence liquid water, however atmospheric water vapour is found to exist in many places where liquid water does not. Similar indirect evidence, however, supports the existence of liquids below the surface of several moons and dwarf planets elsewhere in the Solar System, some are speculated to be large extraterrestrial "oceans". Liquid water is thought to be common in other planetary systems despite the lack of conclusive evidence and there is a growing list of extrasolar candidates for liquid water.".
- Extraterrestrial_liquid_water thumbnail Warm_Season_Flows_on_Slope_in_Newton_Crater_(animated).gif?width=300.
- Extraterrestrial_liquid_water wikiPageExternalLink www.exoplanet.eu.
- Extraterrestrial_liquid_water wikiPageExternalLink 071213101403.htm.
- Extraterrestrial_liquid_water wikiPageExternalLink 071213180823.htm.
- Extraterrestrial_liquid_water wikiPageExternalLink 071221105611.htm.
- Extraterrestrial_liquid_water wikiPageExternalLink 081215091011.htm.
- Extraterrestrial_liquid_water wikiPageID "11322595".
- Extraterrestrial_liquid_water wikiPageRevisionID "606810715".
- Extraterrestrial_liquid_water hasPhotoCollection Extraterrestrial_liquid_water.
- Extraterrestrial_liquid_water subject Category:Oceans.
- Extraterrestrial_liquid_water subject Category:Planetary_habitability.
- Extraterrestrial_liquid_water subject Category:Water.
- Extraterrestrial_liquid_water type BodyOfWater109225146.
- Extraterrestrial_liquid_water type Ocean109376198.
- Extraterrestrial_liquid_water type Oceans.
- Extraterrestrial_liquid_water type PhysicalEntity100001930.
- Extraterrestrial_liquid_water type Thing100002452.
- Extraterrestrial_liquid_water type YagoGeoEntity.
- Extraterrestrial_liquid_water type YagoPermanentlyLocatedEntity.
- Extraterrestrial_liquid_water comment "Extraterrestrial liquid water (from the Latin words: extra ["beyond", or "not of"] and terrestris ["of or belonging to Earth"]) is the presence of water in its liquid state that is found beyond Earth. It is a subject of wide interest because it is commonly believed to be a prerequisite for extraterrestrial life.With oceanic water covering 71% of its surface, Earth is the only planet known to have stable bodies of liquid water on its surface and liquid water is essential to all known life forms.".
- Extraterrestrial_liquid_water label "Extraterrestrial liquid water".
- Extraterrestrial_liquid_water label "Внеземная вода".
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- Extraterrestrial_liquid_water sameAs Q4113678.
- Extraterrestrial_liquid_water sameAs Q4113678.
- Extraterrestrial_liquid_water sameAs Extraterrestrial_liquid_water.
- Extraterrestrial_liquid_water wasDerivedFrom Extraterrestrial_liquid_water?oldid=606810715.
- Extraterrestrial_liquid_water depiction Warm_Season_Flows_on_Slope_in_Newton_Crater_(animated).gif.
- Extraterrestrial_liquid_water isPrimaryTopicOf Extraterrestrial_liquid_water.