Saturn's moon

Saturn's largest moon, Titan, has a thick atmosphere. Clouds. Complex [organic:natural] molecules. NASA has called it "one of the most Earth - like worlds we have found to date." With one glaring exception. "It's awfully cold down there. It's about 94 degrees Kelvin. Which means that water [would:should] be a rock."Paulette Clancy, a chemical engineer at Cornell University. At temperatures that [cold:hot] - minus 290 degrees Fahrenheit -one of the most basic biological structures, the cell membrane, can't exist. Because to form, the oily membranes [depend:independent] on the presence of liquid water.That said, Titan does have plenty of liquid to go around - but it's liquid methane. So Clancy and her colleagues used [computer:technology] models to determine whether any [molecules:atoms] on Titan might mimic the membrane - forming compounds here on Earth.