Daniel FischerThe chemical #habitability of Earth and rocky planets prescribed by core formation: https://www.nature.com/articles/s41550-026-02775-z -> Researchers from ETH Zurich have demonstrated why only a small number of planets have the chemical requirements for life – and why the Earth is so fortunate: https://ethz.ch/en/news-and-events/eth-news/news/2026/02/why-only-a-small-number-of-planets-are-suitable-for-life.html
The chemical habitability of Earth and rocky planets prescribed by core formation - Nature Astronomy
A narrow ‘Goldilocks zone’ of oxidation levels during exoplanetary core formation allows both nitrogen and phosphorus to remain in the mantle. Earth lies within this zone, but more oxidized or reduced exoplanets may lock these elements in their cores, limiting habitability.