When the Sun Dived into a Cloud ⚡ экспресс
Original: "Cosmogenic 10Be as a Tracer for Recent Heliospheric Encounters with Interstellar Cold Clouds"
Beryllium-10 traces from cosmic showers reveal when the Solar System trekked through dense clouds.
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Imagine the Sun entering a huge cloud of dust and gas — our protective bubble shrinks to Earth's orbit, and an invisible shower of cosmic rays begins. Radioactive beryllium is born in the air, falls into the ocean, and gets trapped in ice. Traces of such a 'downpour' were found in rocks 10 million years old — not a supernova blast, but an encounter with a cosmic cloud.
🎯 Beryllium-10 is a cosmic timekeeper: its slow decay preserves the memory of solar storms and cloud encounters over tens of millions of years.