News

Source — Source: TH ///Category — GS Paper 1 ///Published — 2026-03-02 ///Exam — Both Prelims and Mains ///Tags — Rapid Fire CA, Quick Facts For Prelims, GS Paper - 1 ///Source — Source: TH ///Category — GS Paper 1 ///Published — 2026-03-02 ///Exam — Both Prelims and Mains ///Tags — Rapid Fire CA, Quick Facts For Prelims, GS Paper - 1 ///

Source: TH · GS Paper 1

Mars-Like Conditions in Salar de Pajonales

Scientists have found that gypsum in the Salar de Pajonales, a high‑altitude salt flat in Chile's Atacama Desert, acts as a microscopic shield preserving microbes and their fossils. The extreme, Mars‑like environment makes the site a crucial analogue for astrobiology and informs India's space‑exploration strategies.

2026-03-02

Published

Source: TH

Source

Quiz Questions

Article

Key Facts and Data Points

Location: Salar de Pajonales, northern Chile, on the western margin of the Altiplano‑Puna plateau.
Altitude: ~3,500 m above sea level, the 3rd‑largest salar in the Atacama Region.
Environmental Conditions: Hyper‑arid, high UV radiation, large temperature fluctuations, sulfate‑rich mineralogy – a poly‑extreme setting analogous to Mars.
Dominant Mineral: Gypsum (calcium sulfate dihydrate) forms crusts that encapsulate microbial life.
Microbial Life: Active halophilic bacteria & archaea; fossilized microbes and molecular biosignatures dated to thousands of years.

Background and Context

The Atacama Desert is the driest non‑polar region on Earth, making its salt flats ideal natural laboratories for studying life under Mars‑like stressors.
Gypsum deposits on Earth and Mars can trap and protect organic material from desiccation and ionising radiation.
Recent astrobiological research focuses on stromatolites and other layered microbial structures within gypsum as potential biosignature reservoirs.

Significance for India / Governance / Policy

Space Exploration: Findings guide ISRO mission planning – targeting gypsum‑rich terrains on Mars for rover sampling (e.g., future Mars Sample Return missions).
Planetary Protection: Understanding natural preservation mechanisms helps formulate planetary protection protocols to avoid forward contamination.
Scientific Collaboration: Encourages Indo‑Chile joint research programs in extremophile biology, geology, and remote sensing.
Technology Development: Stimulates development of miniaturised drilling and in‑situ analysis tools for detecting biosignatures in mineral matrices.

Related Constitutional / Legal Provisions

Article 48A of the Indian Constitution encourages the State to protect and improve the environment, which includes responsible space activities and planetary protection.
Space Activities Act (draft) – envisages guidelines for extraterrestrial resource utilization and preservation of potential biosignatures.

References

No additional references provided in the source article.