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12Nov 2025

Rare Earth Hypothesis: Revisiting Life’s Cosmic Uniqueness

Rare Earth Hypothesis: Revisiting Life’s Cosmic Uniqueness Why in the News? Recent findings from the Kepler and James Webb Space Telescopes have revived interest in the Rare Earth Hypothesis, suggesting that while earth-sized planets in habitable zones are common, the exact conditions needed for complex life remain exceptionally rare and difficult to replicate. This renewed …

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19Feb 2025

Saturn’s Rings May Be As Old As Solar System

Why in the news? A new study challenges previous estimates that Saturn’s rings are only 100 million years old. Computer models suggest dust particles are expelled, keeping the rings clean, implying they could be 4 billion years old, like the Solar System. New Insights: Rings May Be Ancient A new study from Tokyo and Paris-based …

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UPSC Prelims 2026 Live Paper Discussion & Detailed Answer Key Analysis


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