Astronomy Picture of the Day . ... Credit: STS-45 Crew , NASA Explanation: Water (Dihydrogen Oxide, H2O) is a truly remarkable chemical compound, fundamental to life on Earth . Earth is the only planet in the Solar System where the present surface temperature and pressure allow the three forms of water, solid (ice) , liquid (ocean) , and gas ( water vapor condensing in clouds ) to exist simultaneously . ... Publications with keywords: Earth - water . Publications with words: Earth - water . ...
... November 18, 1995 . Water World . Credit: NASA , STS-45 Crew . Explanation: Water (Dihydrogen Oxide, H2O) is a truly remarkable chemical compound and is fundamental to life on Earth . Earth is the only planet in the Solar System where the surface temperature and pressure allow the three forms of water, solid (ice), liquid (ocean) , and gas (water vapor condensing in clouds) to exist simultaneously on its surface. ... About APOD | ... NASA Technical Rep.: ...
... The ability of these compounds to react together in the gaseous phase or in liquid water is discussed. ... We report here, from the point of view of organic chemistry, an analysis of the compounds observed in the IM and several examples of reactions between two of them. ... Scheme 4. ... The presence of heavier compounds can be seriously envisaged because several of those observed in the IM correspond to the formal addition of two other ones (sometimes followed by an elimination reaction). ...
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