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I can't hear you very well <a href=" http://www.sfbbm.se/topamax-25-mg-weight-loss.pdf ">topamax online</a> Understanding the thickness and rigidity of Titan’s ice shell is crucial to figuring out what fuels the moon’s methane rain, lakes and dunes. Titan’s atmosphere contains so much methane that if it all rained down, it would form a global layer 10 meters thick. Yet scientists have no idea where that methane comes from. Until the new study, the most logical origin for methane seemed to be deep beneath the surface, says Cornell University planetary scientist Jonathan Lunine. But it would be very difficult for methane to vent through a thick, stiff crust into the atmosphere.