The ESA sent the satellites into orbit aboard India’s PSLV-XL rocket, launched from the Satish Dhawan Space Center, near Chennai, in southern India.

The solar corona influences space weather, so a better understanding of it is fundamental to predict extreme space weather events and how they might affect the Earth.

It is also the outermost layer of the Sun’s atmosphere, thin and composed of plasma, and the source of the solar wind and space weather.

The ESA informed that the satellites will fly together as a single unit, maintaining a precise formation with a margin of error of just one millimeter.

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