New Delhi: Researchers from the Aryabhatta Research Institute of Observational Sciences (ARIES) have developed a new method to reconstruct the Sun’s polar magnetic activity over the past 100 years by analysing historic solar images from the Kodaikanal Solar Observatory (KoSO), the government said on Wednesday.

The study, led by Dibya Kirti Mishra of ARIES, involved scientists from the Indian Institute of Space Science and Technology, the Southwest Research Institute in the US, the Max Planck Institute for Solar System Research in Germany, and Italy’s INAF Osservatorio Astronomico di Roma. Together, they estimated the Sun’s polar magnetic field across the last century.

“Understanding the Sun’s magnetic behaviour helps scientists predict solar storms, which can damage satellites, disrupt G

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