Meanwhile, at Lagrange point 1…

Indian solar mission's new findings throw light on enduring Sun mysteries bbc.co.uk

The Sun's surface sits at around 6,000°C; the thin corona above it runs to millions of degrees, and nobody has fully explained why. India's Aditya-L1 mission has now returned measurements that pin down where the energy heating that outer atmosphere is coming from, narrowing one of the oldest open questions in astrophysics.