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The Solar Orbiter (SolO) is a Sun-observing probe developed by the European Space Agency (ESA) with a NASA contribution. Solar Orbiter, designed to obtain detailed measurements of the inner heliosphere and the nascent solar wind, also performs close observations of the polar regions of the Sun which is difficult to do from Earth. These observations are important in investigating how the Sun creates and controls its heliosphere.
Image: European Space Agency, CC BY-SA 3.0 igo · Text from Wikipedia, CC BY-SA 4.0
