NASA's stratospheric balloon mission

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Telescopes designed to operate in space have to be constructed differently than those meant to operate on the ground

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t what about telescopes that operate in between?

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An upcoming NASA mission will use a balloon larger than a football field to send a telescope 130,000 feet

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From that height, the telescope will study a phenomenon that chokes off star formation in some galaxies, effectively killing them.

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The mission, called the Astrophysics Stratospheric Telescope for High Spectral Resolution Observations at Submillimeter-wavelengths

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Construction of the 8.2-foot (2.5-meter) mirror wrapped up this month. Designing and building it proved challenging because of two key demands:

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The mirror and its support structure must be exceptionally light to travel by balloon,

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