# The Thermometer at the Bottom of the World

- slug: the-thermometer-at-the-bottom-of-the-world
- date: 2026-04-06
- category: Space & Aerospace

A Berkeley Lab seismometer has been running seven months at 338°F nearly 7,000 feet underground at Fervo Cape Station — the world’s longest such measurement. The hardware that made it possible is the piece that was missing from the EGS financing puzzle.

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