Search results
Results from the WOW.Com Content Network
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 ...
Whether there is life on Titan, the largest moon of Saturn, is currently an open question and a topic of scientific assessment and research. Titan is far colder than Earth, but of all the places in the Solar System, Titan is the only place besides Earth known to have liquids in the form of rivers, lakes, and seas on its surface.
Saturn's moon Titan is also thought to have a salty subsurface ocean of water - as salty as the Dead Sea on Earth. [3] Additionally, research suggests that Saturn's moon Mimas might be hiding a liquid water ocean beneath its impact-battered surface.
Lakes of liquid ethane and methane exist on the surface of Titan, Saturn's largest moon. This was confirmed by the Cassini–Huygens space probe, as had been suspected since the 1980s. [2] The large bodies of liquid are known as maria (seas) and the small ones as lacūs (lakes). [3]
There are lower crater densities in areas of equatorial dunes and in the north polar region (where hydrocarbon lakes and seas are most common). [30] Pre-Cassini models of impact trajectories and angles suggest that where the impactor strikes the water ice crust, a small amount of ejecta remains as liquid water within the crater. It may persist ...
Liquid water is thought by most astrobiologists to be an essential prerequisite for extraterrestrial life. There is growing evidence of subsurface liquid water on several moons in the Solar System orbiting the gas giants Jupiter, Saturn, Uranus, and Neptune. However, none of these subsurface bodies of water has been confirmed to date.
In the early solar system, planets including Earth and various moons were pelted by asteroids and other space debris that carried water and chemicals including organic compounds.
Evidence also indicates the presence of liquid water and ammonia under the surface, which are delivered to the surface by volcanic activity. While this water can be used to generate breathable oxygen , more is blown into Titan's atmosphere from the geysers on the icy moon of Enceladus (also a moon of Saturn), as they start as water molecules ...