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Researchers watch and worry as balloons are blasted from the sky

03:27
A NASA balloon launched over Hawaii in 2014 to test components that might one day be used to land spacecraft on Mars. Balloons are regularly used to test new designs and conduct scientific experiments. (NASA)
A NASA balloon launched over Hawaii in 2014 to test components that might one day be used to land spacecraft on Mars. Balloons are regularly used to test new designs and conduct scientific experiments. (NASA)

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