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Ancient Cosmic Cloud Boosted Radiation, Altered Earth's Climate

2/17/2025

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Summary

Story summary

Around 10 million years ago, Earth likely traversed a dense interstellar cloud, compressing the heliosphere and heightening cosmic radiation exposure. This theory is supported by a striking 70% increase in beryllium-10 isotopes discovered in deep-sea crusts, hinting at significant climatic changes and potential impacts on biological evolution.

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Story summary

Around 10 million years ago, Earth likely traversed a dense interstellar cloud, compressing the heliosphere and heightening cosmic radiation exposure. This theory is supported by a striking 70% increase in beryllium-10 isotopes discovered in deep-sea crusts, hinting at significant climatic changes and potential impacts on biological evolution.