-Published to mark the 50th anniversary of the first mission of the Gemini programme in 1965 -Explanations of the spacecraft-s systems - Titan II rocket launch vehicle, guidance an navigation, environmental control, reaction control and propulsion, re-entry and Earth landing, communications and electrical power. -Techniques and accomplishments of the programme - controlled rendezvous and docking, use of a docked rocket to achieve extreme altitude, spacewalking, controlled re-entry, long-duration flight, mission control. -The many -firsts- accomplished during Gemini missions - first US two-man spacecraft, first US spacewalk, first manoeuvre in a manned spacecraft, first in-flight computer, first in-flight radar, first rendezvous, first docking, first controlled re-entry, first fuel cells for electrical power, firsts optical navigation in space. -A wealth of artwork, photography and illustrations from the NASA archives.
