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India Post Unveils Commemorative Stamp Celebrating 125 Years of Kodaikanal Solar Observatory.

National | Dated: 23 May 2025

In May 2025, the Department of Posts (DoP), under the Ministry of Communications (MoC), Government of India, released a ₹5 commemorative postage stamp to mark 125 years of the Kodaikanal Solar Observatory (KSO), Tamil Nadu.

🎯 Key Highlights:

  • - The launch event was held at the Indian Institute of Astrophysics (IIA), Bengaluru, Karnataka.
  • - The stamp features an H-alpha image of the Sun captured at KSO on May 6, 2024.
  • - The release was officiated by S. Rajendra Kumar, Chief Postmaster General, Karnataka Circle, and attended by A. S. Kiran Kumar, Chairperson of IIA and former ISRO Chairman.

💡 Other Important Facts:

  • (i) Established on April 1, 1899, KSO is located at 2,343 meters altitude in the Palani Hills, Tamil Nadu.
  • (ii) Operated by IIA, it focuses on Solar Spectroscopy, Sunspot Monitoring, Helioseismology, Magnetic Field Studies, and Long-term Solar Activity.
  • (iii) It is India’s oldest astronomical observatory and holds one of the world's longest continuous solar image archives with over 45,000 digitized records.

📚 Test Your Knowledge:

The Department of Posts recently issued a ₹5 stamp celebrating how many years of continuous operation of the Kodaikanal Solar Observatory?

Correct Answer: 125 Years

🚀 Quick Recap: