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The current Venusian atmosphere has only ~200 mg/kg H 2 O(g) in its atmosphere and the pressure and temperature regime makes water unstable on its surface. Nevertheless, assuming that early Venus's H 2 O had a ratio between deuterium (heavy hydrogen, 2H) and hydrogen (1H) similar to Earth's Vienna Standard Mean Ocean Water of 1.6×10 −4, [7] the current D/H ratio in the Venusian atmosphere ...
Planetary oceanography, also called astro-oceanography or exo-oceanography, [1] is the study of oceans on planets and moons other than Earth.Unlike other planetary sciences like astrobiology, astrochemistry, and planetary geology, it only began after the discovery of underground oceans in Saturn's moon Titan [2] and Jupiter's moon Europa. [3]
When scientists look for signs of life throughout the galaxy, planets with water are always at the top of the list. Planets with water are more common than previously thought, research suggests ...
water? water–ammonia mixture? subsurface, global c. 30,000,000 est. 50–100 global ocean under 10 to 30 km of ice, perhaps twice the volume of Earth's ocean Ganymede: moon of Jupiter: 35.4 (internal global ocean) salt water? subsurface, global c. 80,000,000 apiece 100 100 km thick, under 150 km of ice, six times the volume of Earth's ocean; [13]
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According to a new study, scientists have now seen—for the first time ever—water in the rocky-planet-forming region of a star’s protoplanetary disks. Earth-Like Planets May Come With Built ...
Earth's surface is dominated by the ocean, which forms 75% of Earth's surface.. An ocean world, ocean planet or water world is a type of planet or natural satellite that contains a substantial amount of water in the form of oceans, as part of its hydrosphere, either beneath the surface, as subsurface oceans, or on the surface, potentially submerging all dry land.
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