Antarctic ice reveals earth passing through supernova debris

14 मई 2026

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Scientists have detected traces of iron-60 in Antarctic ice up to 80,000 years old, showing that the solar system is moving through material from an ancient stellar explosion. The findings come from a study published in Physical Review Letters and point to the Local Interstellar Cloud as the source of the radioactive isotope.

An international team from the Helmholtz-Zentrum Dresden-Rossendorf led the analysis of ice cores collected through the European EPICA project. The samples, formed between 40,000 and 80,000 years ago, contained lower levels of iron-60 than more recent measurements. This isotope forms only in supernova explosions and had previously been found in younger snow and sediments, leaving its origin unclear until now.

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Antarctic meltwater provides less iron than previously thought

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Scientists create cosmic clock from zircon crystals to study ancient landscapes

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Researchers at Curtin University have developed a technique using krypton gas in microscopic zircon crystals to track the history of Earth's landscapes over millions of years. The method, which relies on cosmic rays striking surface minerals, reveals how erosion and sediment movement have shaped terrains in response to climate and tectonic changes. This approach could also aid in locating mineral deposits in Australia.

Hubble telescope captures fresh breakup of comet C/2025 K1

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14 मई 2026 11:51