Titan offers a unique opportunity in solar system exploration. It is the smallest known body with an atmosphere. In terms of spacecraft entry dynamics, it has the most accessible atmosphere in the solar system. It has dark reddish clouds which are probably composed of organic compounds, falling continually to the surface. It has the highest ratio of methane to hydrogen of all known reducing atmospheres, making an environment in some respects like that of the primitive Earth at the time of the origin of life. It probably has the only surface of all the bodies beyond Mars with atmospheres that...

Our first journey to the Moon ushered in a new era in which man will no longer be confined to his home planet. The concept of traveling across the vastness of space to new worlds has stirred the imagination of men everywhere. One-sixth of the Earth's population watched as the Apollo 11 astronauts walked and worked a quarter of a million miles away, The success of this mission has opened new fields of exploration and research- research which will lead to a greater understanding of our planet and provide a new insight into the origin and history of the solar system. The Apollo 11 mission was...

Our second journey to the Moon opened the new age of extraterrestrial scientific exploration by man. Going beyond Apollo 11, which demonstrated to an eager world that astronauts can set foot on a celestial body and return safely to Earth, Apollo 12 concentrated on a systematic scientific sampling designed to help unlock some of the secrets of the solar system's origin and early history. At Apollo 12's destination we had in the spring of 1967 landed Surveyor 3, a spiderlike mechanical creature with three legs, a clawlike arm, and a roving TV eye. Less than 3 years later, Pete Conrad and Alan...