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What is the Sun's corona?

The corona is the Sun's outermost atmosphere, extending millions of kilometres into space. It's usually only visible during a total solar eclipse. The Aditya-L1 mission is specifically studying the corona's mysteries, like why it's so much hotter than the Sun's surface, a long-standing puzzle for scientists.

Stories that explain this

Indian solar mission's new findings throw light on enduring Sun mysteries

Related explainers

What is Aditya-L1? How do magnetic fields heat the Sun? Why is the Sun so hot? Why study the Sun's magnetic field? What is the Sun's atmosphere? What is Sundance?

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