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Keith Smith
drkeithsmith.bsky.social
did:plc:wxe224kl2yklhrpj2friwiue
No astronomy per se in this week's issue of @science.org, but there is a fascinating study by Pavia et al. that uses cosmic dust to trace sea ice coverage in the Arctic. 3He from micrometeorites records when the ocean was ice free, over the last 30,000 years. 🧪🌊
https://www.science.org/doi/10.1126/science.adv5767
2025-11-06T19:33:40.064Z