Vigil

Vigil, formerly known as Lagrange, is a future space weather mission under development by the European Space Agency (ESA). The mission will provide the ESA Space Weather Office with instruments able to monitor the Sun, its solar corona, and interplanetary medium between the Sun and Earth, to provide early warnings of increased solar activity, to identify and mitigate potential threats to society and infrastructure, as well as to allow 4 to 5 days space weather forecasts. To this purpose the Vigil mission will place for the first time a spacecraft at Sun-Earth Lagrange point 5 (L₅) from where it would get a 'side' view of the Sun, observing regions of solar activity on the solar surface before they turn and face Earth.

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Lagrange
solar probe, proposed entity, solar observatory, Lissajous orbit, 

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