The evolution of spacesuits

STEVE EMBER: I'm Steve Ember. SHIRLEY GRIFFITH: Wiley Post made this protective clothing with the help of the Phillips Petroleum Company and the B-F Goodrich Company. STEVE EMBER: Astronauts in NASA's Mercury Program flew the first American space flights in the early 1960s. STEVE EMBER: You will wear a spacesuit to work in the open cargo area of the Space Shuttle Discovery, which returned from its last flight last month. You can also ultraviolet: of or using electromagnetic waves that are just shorter than those of violet light in the spectrum and that cannot be seen 紫外线的；利用紫外线的 meteoroid: 流星体 Related stories: Space Heroes 太空英雄 China names 1st 'spacewalker' astronaut Space shuttle program nears an end Discovery preps for last space mission （来源：VOA 编辑：崔旭燕）