When we think about all the amazing inventions and discoveries associated with NASA over the last half century, it’s impossible not to wonder what the future holds. Even though the shuttle program is over, and the only place to see a NASA-manned vehicle is a museum, engineers are hard at work designing a new rocket system designed to send astronauts to Mars.
One thing that may come as a surprise is, despite all of the cutting-edge technology, asbestos has played a major a role in spaceflight, and, to some extent, still does. As discussed in a feature from NASA Spaceflight.com, asbestos-containing material has been heavily used in various aspects of rocket design and heat shielding technology.
One the one hand, it is easy to see why asbestos was, and still is, a somewhat favored material. It is a naturally occurring element, which is easy to mine, and cheap to refine into manufactured products. It an excellent insulator from heat, caustic chemicals, electricity, and fire, and it can also be spun into extremely lightweight textiles. Weight reduction is a major goal in spaceflight, as these machines have to reach speeds of around 20,000 MPH to clear Earth’s atmosphere and get into space.
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