I never understood space programs and the need of NASA. Someone help me. What is the point of spending billions of dollars to get an expensive craft out of Earth and various space programs? What is water exists on Mars? What is we find living organisms on other planets? Shouldn't the U.S. and other super country worry about the planet Earth that we live in? Spend the money to discover new technologies- how to reduce global warming, reduce traffic congestion and air condition, expedite cancer research, start an agriculture program in third countries and lot more.