Space is the dimension of human greatness, time of human nothingness. Space is a dimension under constant conquest. The wheel, ship, chariot, train, truck, and space shuttle are humanity's inventory of ever-improving weapons. Born on a clump of grass in the African savannah, we quickly spread out from Spain to Siberia. When we reached the edge of Australia, undeterred, we rafted to Hawaii. When there were no more oceans to cross, we made the moon our mission. Today, with television and the internet, rather than travel we command the world into our living rooms. Yet, to complement these conquests of distance, what single victory have we scored against time? Though technology can get us to New York by lunch, it cannot slow one tick of the clock's countdown to death. Our freedom in space is like a bottle's freedom to roll side to side on a conveyor belt carrying it toward a trash heap.