NASA Administrator T. Keith Glennan shows then-Senator Lyndon B. Johnson, Chairman of the Senate's Aeronautical and Space Sciences Committee, a sample of the aluminized Mylar film used to fabricate the 100-foot More
Echo, NASA's first communications satellite, was a passive spacecraft based on a balloon design created by an engineer at NASA's Langley Research Center. Made of Mylar, the satellite measured 100 feet (30 meter More