United States Astronaut Badge December 13th 2018. In addition to the astronaut badge, which is worn on a military uniform, an astronaut pin is also issued to all NASA astronauts. It is a lapel pin, worn on civilian clothing. The pin is issued in two grades, silver and gold, with the silver pin awarded to candidates who have successfully completed astronaut training and the gold pin to astronauts who have actually flown in space. Astronaut candidates are given silver pins but are required to purchase the gold pin at a cost of approximately $400. A unique astronaut pin was made for NASA astronaut Deke
Astronaut training the ISS. The Tsukuba Space Center also includes medical facilities for assessing suitability of candidates, an isolation chamber for simulating some of the mental and emotional stressors of long duration spaceflight, and a hypobaric chamber for training in hull breach or Life Support System failure scenarios resulting in a reduction or loss of air pressure. Although official detail of the selection process for the Shenzhou program is not available, what is known is that candidates are chosen by the Chinese National Space Administration from the Chinese air force and must be between 25 and 30 years of age, with a