100:00:01,534 --> 00:00:04,370Far above the Earth,two tiny spacecraft200:00:04,372 --> 00:00:06,772are raising the spiritof exploration300:00:06,774 --> 00:00:09,408to extraordinary levels.400:00:09,410 --> 00:00:12,478For three and a half decades,they've been investigating500:00:12,480 --> 00:00:15,414the outer reachesof our solar system.6