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NASA’s balloons are constructed of polyethylene film, which is the material found in plastic bags. The film for this balloon is onlycentimetres thick, making it about the same as an ordinary sandwich wrap. The
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Document Date: 2015-03-09 14:53:59
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NASA’s balloons are constructed of polyethylene film, which is the material found in plastic bags. The film for this balloon is onlycentimetres thick, making it about the same as an ordinary sandwich wrap. The