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Orbiting Carbon Observatory 2
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<p>Orbiting Carbon Observatory-2 (OCO-2) is an American <a href="/facts/Environmental_science/svr8eCse">environmental science</a> satellite which launched on 2 July 2014. A <a href="/facts/NASA/TIMCV0yV">NASA</a> mission, it is a replacement for the <a href="/facts/Orbiting_Carbon_Observatory/e2C0yIUI">Orbiting Carbon Observatory</a> which was lost in a launch failure in 2009. It is the second successful high-precision (better than 0.3%) <a href="/facts/Space-based_Measurements_of_Carbon_Dioxide/hWAXvFnc">CO2 observing satellite</a>, after <a href="/facts/Greenhouse_Gases_Observing_Satellite/fM0AgR4u">GOSAT</a>. </p>