But there is an important difference. On our own planet, lakes and seas are flowing with water, while Titan's lakes and seas are filled primarily with methane and ethane, that slosh around within these liquid reservoirs. In this never-before-seen cycle, the hydrocarbon molecules evaporate and condense into clouds that send an exotic "rain of terror" back down to this strange moon-world's carbon-slashed surface. The bottom line is that the moon and fishing are inexorably linked, and it will serve you well to educate yourself as to how it all works. Just understanding the phases of the moon and which are better for fishing than others is of huge importance. As a matter of fact this free e-book will teach you what you need to know, and again it won't cost you anything. It's all free! What could be a better deal than that? I would also suggest that you never forget what the reverend McLain said in the movie A River Runs Through It, "Anyone who does not know how to catch a fish shouldn't be able to disgrace that fish by catching it." To that I say, Amen reverend, Amen! Dr. Soderblom calculated the gravity signatures both in and around 1,200 craters that had been excavated by impacting objects on the lunar far side. He then went on to compare the gravity within each crater with the gravity of the surrounding terrain. Dr. Soderblom did this in order to determine whether an impact increased or decreased the local porosity.