In reply to Horace Heffner's message of Fri, 12 Sep 2008 02:57:31 -0800: Hi, [snip] >"It is currently thought that the atmosphere of Venus up to around 4 >billion years ago was more like that of the Earth with liquid water >on the surface. The runaway greenhouse effect may have been caused by >the evaporation of the surface water and subsequent rise of the >levels of other greenhouse gases.[7]" > >http://en.wikipedia.org/wiki/Atmosphere_of_Venus
Quote:- "The temperature and pressure at the surface are 740 K (467°C) and 93 bar, respectively.[1]" Note that if all the Earth's oceans existed as water vapour in the atmosphere, the pressure at the surface would be about 250 bar. > >http://cdsads.u-strasbg.fr/abs/1988Icar...74..472K [snip] Quote from the abstract: "Finally, the results of the model are used to speculate about when an Earth-like planet might lose its water and how much closer to the Sun Earth could have formed without ending up like Venus." ...I take it from this that they concluded that it couldn't have ended up like Venus at it's current location. Regards, Robin van Spaandonk <[EMAIL PROTECTED]>
