The European Space Agency plans to launch a pair of satellites to study the Sun’s corona, with one blocking its surface light while the other observes the remaining light.
The European Space Agency is preparing to create its own solar eclipses so that researchers can study one of the more difficult-to-observe parts of the Sun’s anatomy: its blazing-hot corona. To do that, it hopes to fly two separate spacecraft, 150 meters apart and aligned so that one satellite blocks all but the corona from the other satellite, which will observe it using an instrument called a coronagraph.
Aside from being mysteriously hotter than the Sun’s surface, it contributes to solar wind, and its coronal mass ejections have potential effects on Earth, ranging from the dancing lights of the planet’s auroras to widespread electrical outages . The ESA says one of the goals of the mission, known as Proba-3, is to measure the Sun’s total energy output to inform climate modeling.
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