If they win NASA's $55 million grant, the UA Steward Observatory's GUSSTO mission will map the Milky Way galaxy through its telescope's 1-meter diameter mirror. About 1,000 feet of cable would connect the telescope to a balloon that can expand wider than a football field. GUSSTO, which stands for Gal/Xgal U/LDB Spectroscopic/Stratospheric THz Observatory, would launch from Antarctica, fly over the Southern Hemisphere and land 100 days later. Read more