Although space exploration has received much publicity, there is another world, equally intriguing, the exploration of which has not received so much attention. Although much closer to us, the world of the sea still contains many mysteries. One remarkable conquest took place early Saturday morning, January 23, 1960. History was made that day as a two-man crew descended to the deepest known point on the Earths surface. The Challenger Deep, 35,800 feet below the surface, had been conquered. Were the highest mountain to be dropped into this trench it would still be covered by over one mile of water. -T.P.F.