posted on Jul, 23 2005 @ 11:56 AM
IF LIFE exists on Titan, Saturn's biggest moon, we could soon know about it - as long as it's the methane-spewing variety. The chemical signature of
microbial life could be hidden in readings taken by the European Space Agency's Huygens probe when it landed on Titan in January.
Titan's atmosphere is about 5 per cent methane, and Chris McKay of NASA's Ames Research Center in Moffet Field, California, thinks that some of it
could be coming from methanogens, or methane-producing microbes. Now he and Heather Smith of the International Space University in Strasbourg, France,
have worked out the likely diet of such organisms on Titan.
They think the microbes would breathe hydrogen rather than oxygen, and eat organic molecules drifting down from the upper atmosphere. They considered
three available substances: acetylene, ethane and more complex organic gunk known as tholins. Ethane and tholins turn out to provide little more than
the minimum energy requirements of methanogenic bacteria on Earth. The more tempting high-calorie option is acetylene, yielding six times as much
energy per mole as either ethane or tholins.
for more ... go to ->
well if mars is not giving evidence of life it will be titan.
those scientist which claims that mars has been cold for 4 billion years and there for isnt full of life. are going to be in a shock if life is on
both mars and titan