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A NASA observatory that will make the most precise measurements of carbon dioxide in Earth's atmosphere to date has marked a key milestone in preparation for its planned July 2014 launch. The Orbiting Carbon Observatory (OCO)-2 spacecraft was moved into a thermal vacuum chamber where it underwent a series of environmental tests. The thermal vacuum tests are designed to confirm the integrity of the observatory's electrical connections and to subject the OCO-2 instrument and spacecraft to the extreme hot, cold, airless environment they will encounter once in orbit. [Source: Moonandback]
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