SwRI`s Strofio will measure Mercury`s `exosphere`
(PHYSorg.com Space & Earth)

The European Space Agency`s BepiColombo spacecraft will launch towards Mercury carrying a unique payload designed and built at Southwest Research Institute: an instrument called Strofio, which will study Mercury`s tenuous exosphere. Part of the SERENA suite of instruments, Strofio`s measurements will help us better understand the planet`s surface and the history of the smallest rocky planet orbiting close to the Sun.