In 1969, the first man stepped on the moon. Since then, the United States of America did and are still doing a lots of research in space. Recently, NASA sent a craft called Mars Polar Lander also known as a robot to reach the surface of the planet Mars. This robot was worth 145 million dollar and it is the most recent loss of a spacecraft. To begin this mission NASA needed human wealth and energy. Are efforts to explore space a waste of money and time and would these not be better used here on Earth where humans do not have enough food, medic ....