The first mission of the European Space Agency’s ExoMars program, which is scheduled to arrive at Mars in October, is a marvel of engineering and robotic sensors.
The probe consists of the Trace Gas Orbiter (TGO) and Schiaparelli, an entry, descent, and landing demonstrator module. The little robot contains an array of sensors designed to provide the first measurements of electric fields from the surface of the red planet.
Key among them are pressure and humidity sensors developed by Helsinki-based environmental sensor maker Vaisala Oyj in collaboration with the Finnish Meteorological Institute (FMI).
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