During the Aug. 12 total solar eclipseoverEurope, scientists aimed to study a long-standing mystery: why the Suns outer atmosphere, the corona, is far hotter than its visible surface.Capturingthe data they neededmeantbeing in exactly the right place at exactly the right time. Pilots from NASAs Johnson Space Centerflew the WB-57Fhigh altitude researchaircraftfrom Ellington Field in HoustontoIceland, []