The prime crew members selected for actual missions are here grouped by their NASA astronaut selection groups, and within each group in the order selected for flight. Two versions of the Apollo Command/Service Module (CSM) spacecraft were developed: Block I intended for preliminary low Earth orbit testing, and Block II which was designed for the lunar landing. The Block I crew position titles were Command Pilot, Senior Pilot (second seat), and Pilot (third seat). The corresponding Block II titles were: Commander, Command Module Pilot (second seat), and Lunar Module Pilot (third seat). The second seat pilot was given secondary responsibility for celestial navigation to keep the CSM’s guidance computer accurately calibrated with the spacecraft’s true position, and the third seat pilot served as a flight engineer, monitoring the health of the spacecraft systems.
Apollo Astronauts Wives jan evans recalls how it was for the families of moon Astronauts Apollo Wives .
Apollo Astronauts Wives janet armstrong stock photos and pictures getty images Apollo Wives Astronauts .
Apollo Astronauts Wives wives of apollo 8 astronauts 1968 history by zim Astronauts Apollo Wives .
Apollo Astronauts Wives astrowives the first ladies of space bookish Astronauts Apollo Wives .
Apollo Astronauts Wives astronaut39s wife unprepared for fallout from aldrin39s fame Apollo Astronauts Wives .
Apollo Astronauts Wives lovely astrowivesapollo 11 wives at the nixon moon ball Apollo Astronauts Wives .
Apollo Astronauts Wives the women they left on planet earth 40 years after the Apollo Astronauts Wives .
Apollo Astronauts Wives astronaut wives club what happened to the mercury 7 Wives Astronauts Apollo .
Apollo Astronauts Wives the apollo 13 astronauts are reunited with their wives in Astronauts Apollo Wives .
Apollo Astronauts Wives 39the astronaut wives club39 space history vs hollywood in Wives Apollo Astronauts .
Apollo Astronauts Wives neil armstrong the first man on the moon in pictures Wives Astronauts Apollo .
Apollo Astronauts Wives the astronaut wives club on pinterest neil armstrong Astronauts Wives Apollo .
Apollo Astronauts Wives astronaut family portraits photo 1 pictures cbs news Wives Astronauts Apollo .
Apollo Astronauts Wives bbc four apollo wives Apollo Astronauts Wives .
Apollo Astronauts Wives astronaut family portraits photo 28 pictures cbs news Astronauts Apollo Wives .
Apollo Astronauts Wives the astronaut wives club season finale review landing Apollo Astronauts Wives .
Apollo Astronauts Wives moon landing intimate photos of the astronauts and their Astronauts Wives Apollo .
Apollo Astronauts Wives apollo 13 astronauts return after deep space crisis in Astronauts Wives Apollo .
Apollo Astronauts Wives in the 1960s while nasa39s astronauts performed heroics in Apollo Astronauts Wives .
Apollo Astronauts Wives the mercury seven mission astronauts left their wives Astronauts Wives Apollo .
"Ganymede's ocean might be organized like a Dagwood sandwich," commented Dr. Steve Vance in a May 1, 2014 statement. Dr. Vance, of NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, went on to explain the weird moon's resemblance to the Blondie cartoon character's famous multi-layered sandwiches. The study, headed by Dr. Vance, provides new theoretical indications for the team's "club sandwich" model, originally proposed in 2013. The research appears in the journal Planetary and Space Science. Titan has three large seas. However, the seas of Titan are not filled with water, but are filled instead with swirling liquid hydrocarbons. All three of Titan's exotic seas are close to its north pole, and they are surrounded by many smaller hydrocarbon-filled lakes in the northern hemisphere. Simply put, resistance to the creation of a space frontier originates with the insecurities of Western leaders. First, it is clear that everything changes with the emergence of a frontier. Established power structures are usually shaken, not reinforced. (If this is not clear, try reading Walter Prescott Webb's The Great Frontier, particularly the last chapter, and Divided We Stand: The Crisis of a Frontierless Democracy, by the same author.)