💥UPSC 2026, 2027 UAP Mentorship November Batch

Solar Energy – JNNSM, Solar Cities, Solar Pumps, etc.

International Astronomical Union (IAU) 

Why in the news?

  • A 3.5-billion-year-old Martian crater has been named after Indian geologist M.S. Krishnan. The naming was approved by the International Astronomical Union (IAU).
  • Several other names proposed by Kerala scientists for Martian landforms were also approved.

About the Martian Crater

  • Estimated to be 3.5 billion years old, dating back to Mars’ early geological history.
  • Located in a region studied for traces of ancient water and habitability.

Who Was M.S. Krishnan?

  • Full name: Maharajapuram Seetharaman Krishnan
  • One of India’s most influential geologists, known as a foundational figure in modern Indian geological studies.
  • Served as Director, Geological Survey of India (GSI) (1950–1956).

Major Contributions

  • Mapped India’s geological structures, including:
    • Indian stratigraphy
    • Peninsular shield
    • Himalayan formations
  • Played a leading role in mineral exploration and petroleum geology in India.
  • Contributed to studies on:
    • Gondwana formations
    • Economic geology
    • Earth resources of India

Famous Work

  • Author of the landmark textbook “Geology of India and Burma”, a globally referenced work in earth sciences.

About the International Astronomical Union (IAU)

  • Founded: 1919
  • A senior international body that governs professional astronomical activities worldwide.
  • Mission: Promote and safeguard astronomy through research, communication, education, development, and international cooperation.
  • Headquarters: Paris, France
  • India is a member of it 
What is the purpose of ‘evolved Laser Interferometer Space Antenna (ELISA)’ project? (2017)

(a) To detect neutrinos 

(b) To detect gravitational waves 

(c) To detect the effectiveness of missile defence system 

(d) To study the effect of solar flares on our communication systems

This PYQ is selected because it directly tests knowledge of a major international scientific venture in the field of astronomy/cosmology, which is conceptually linked to the mandate of the IAU

Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

Attend Now

Subscribe
Notify of
0 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments

JOIN THE COMMUNITY

Join us across Social Media platforms.