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Context:
The International Astronomical Union (IAU) has approved naming a 3.5 billion-year-old crater on Mars after M.S. Krishnan, one of India’s pioneering geologists. The proposal was submitted by two Kerala-based researchers and marks a significant recognition of Indian scientific heritage in planetary nomenclature.
Mars Craters
A crater on Mars is a circular depression formed primarily by the impact of meteoroids, asteroids, or comets striking the surface.
Notable Craters on Mars:
| Crater Name | Location/Region | Significance |
|---|---|---|
| Gale Crater | Aeolis region | Landing site of Curiosity Rover; evidence of ancient water |
| Jezero Crater | Syrtis Major Planum | Landing site of Perseverance Rover; ancient river delta |
| Huygens Crater | Southern hemisphere | Large, heavily eroded crater |
| Hellas Basin | Southern hemisphere | One of the largest impact basins in the Solar System |
| Gusev Crater | Near Martian equator | Explored by Spirit Rover; past water flows |
Mars Crater Named ‘Krishnan Crater’
- The crater, billions of years old, will now be officially known as Krishnan Crater.
- Named after M.S. Krishnan (1898–1970), a legendary Indian geologist and the first Indian Director of the Geological Survey of India.
Kerala Place Names Adopted on Mars
IAU approved several Kerala-based names for smaller Martian features associated with the crater:
- Valiamala
- Thumba
- Bekal
- Varkala
- Periyar
These names will represent smaller craters and a vallis (valley), creating Martian counterparts of well-known Kerala locations.
