Born on March 9, 1934, Gagarin was a military pilot before being chosen for the first group of cosmonauts in 1960.

加加林生于1934年3月9日，在1960年被选为第一组宇航员之前是服役中的飞行员。

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Before being chosen in 1962 as one of the "Group II" astronauts -- which included Apollo 13 commander James Lovell along with such legends as Frank Borman, Pete Conrad and John Young -- Armstrong was one of the elite pilots selected to fly the X-15 rocket plane up to five times the speed of sound and toward the edge of space.

CNN: Neil Armstrong, a hero who shunned fame