Alien life :Next thinking[ PART:1]
March 25, 2009 18 Comments
Carbon is a great molecular glue. Simply take carbon and add water , you have just got life. Well, it is not quite that simple , but water and carbon combo has succeeded to win life , at least on planet earth. This combo has successfully spread his root all over on planet Earth . It is worth considering that what may be death to us , may be life for other beings. Many of researcher and biochemists also speculated that there are several combination of molecule and solvents that may cause life forms too much differs from us that we have never thought about it. Currently we are thinking about only our version of “sweet spot”. Our searches for extra-terrestrial life forms is totally focused on planets similar to others. There are many biochemistries which may exist in such extreme conditions , we have never thought about it like on venus , saturn, jupiter and even in neptune and uranus. It is worth considering that who do their lab work , are a simply carbon based human working in planet earth’s atmospheric conditions . Ammonia has almost same properties that of the water on extreme condition .it is also good solvent . May be it’s possible that water is last possibility for capable of having life forms in extreme environmental condition as on planet Earth.
Even counter intuitive element such as arsenic may be capable of supporting life forms under right conditions . Even on earth some marine algae incorporate arsenic into complex organic molecules such as arsenosugars and arsenobetains. Several other small life forms use arsenic to generate energy and fascilate growth. Chlorine and sulfur are also possible elemental replacement for carbon. Sulfur capable of of forming long again molecules like carbon . Some terrestrial bacteria have already been discovered to survive on sulfur rather than oxygen , by reducing sulfur to hydrogen sulfide . Nitrogen and phosphorus could also form biochemically molecules. Phosphorus is similar to carbon in that it form long again on its own,. ..,continue…