Cadet Competition Written Practice Exam

America's first manned spaceflight program was Project Mercury. This program was initiated in the late 1950s with the goal of putting a human into Earth orbit and returning them safely. It marked the United States' entry into the era of human spaceflight during the Cold War space race with the Soviet Union.

Project Mercury consisted of six manned flights from 1961 to 1963, with notable missions including Alan Shepard's suborbital flight in Freedom 7 and John Glenn's orbital flight aboard Friendship 7, making him the first American to orbit the Earth. The program aimed to research and understand the effects of space travel on the human body, paving the way for future manned missions.

In contrast, the other space programs listed developed later. The Gemini Program followed Project Mercury and furthered the United States' space capabilities, while Project Apollo was specifically aimed at landing humans on the Moon. The Shuttle Program introduced reusable spacecraft but came long after the initial manned missions of Mercury.