Knowledge is the basis from which man makes his leaps into the unknown. Incredible knowledge. In its attempts to discover the nature of the universe, man keeps making the kind of advances which sometimes simplify, sometimes complicate the process we call life. The time is a distant day in the future, '1995' to be exact. Two young Americans are tearing through space, the first married couple to investigate some of the profoundest mysteries of the universe. Right now, they have tuned their radio receiver to ground control back on Earth, where they listen as a radio broadcaster is memorializing their journey - one hundred years after they launched...