The 365 Days of Astronomy EVSN - Never Trust a Volcano & Other Geology Tales
Dec 12, 2025
Discover the dramatic changes Earth has undergone since its formation, including how collisions shaped our planet and its moon. Learn about surprising internal structures exposed by seismic waves and the strange effects of core-leaching on the mantle. Delve into the world of volcanology with shocking eruptions like Hale Gubi's nine-mile ash plume. Get insights on innovative methods used to map magma pathways and catch up on exciting recent launches in aerospace.
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Earth And Theia Shared Origins
- Isotopic comparisons suggest Earth and the impactor Theia formed from similar inner‑solar‑system material.
- This implies Earth and Theia were likely neighboring bodies before their giant collision.
Leaky Core Shapes Earth's Interior
- Core–mantle chemical exchange may have prevented neat layer separation and produced anomalous deep structures.
- These interactions could affect cooling, volcanic hotspots, and atmospheric evolution.
Superionic Core Explains Seismic Oddities
- Earth's inner core may be in a superionic state where light atoms diffuse through solid iron.
- This mobile‑atom lattice explains seismic speeds that resemble soft metal rather than rigid iron.