It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
As a biochemist, Baross said lab experiments also show water does not necessarily have to be the basis for life. It might be possible for a living organism to use methane, ethane, ammonia or even more bizarre chemicals, he said.
H. G. Wells:
One is startled towards fantastic imaginings by such a suggestion: visions of silicon-aluminium organisms – why not silicon-aluminium men at once? – wandering through an atmosphere of gaseous sulphur, let us say, by the shores of a sea of liquid iron some thousand degrees or so above the temperature of a blast furnace.
Originally posted by iori_komei
A few examples being; Hot Water-based, (planets similar to Venus, but where liquid water
exists), Water-hydrochloric acid, Water-ammonia based, inner liquefied water zones,
such as Europa and possibly Charon.
LIFE IN THE UNIVERSE by Gary Nelson
Of the active elements, we can eliminate hydrogen immediately from consideration because it is too light and would not be retained in a minor planet's atmosphere. There are now left on the list of active, gaseous elements oxygen, fluorine, sulphur - only at extremely high temperatures - and chlorine. Sulphur can be largely disregarded because of its high vaporization point, 444° C, and only planets very close to their sun with very large masses could maintain this or higher temperatures and retain a sulphur atmosphere. Fluorine can be eliminated on the grounds that it is too active; it will combine with everything except inert gasses. It will never exist uncombined when there is something for it to combine with. As it forms gaseous compounds when it combines, any planet with a large amount of fluorine on it would have an atmosphere consisting mainly of flourides. And since flourine is rather rare, it is unlikely that many such planets exist.
Oxygen and chlorine are the two remaining elements. Which is the more common in the universe? The question can not be answered definitely. However, chlorine has an atomic weight twice that of oxygen, and the rule seems to be that the lighter elements are more common than the heavier ones. Chlorine is much less common than oxygen on earth. Therefore chlorine atmospheres should be nowhere near as common as oxygen ones on this basis of relative abundance. Still, they should be more common than fluorine atmospheres.
Originally posted by Octavius Maximus
We are humans, we are looking for something similar.