Exoplanets Rocky Planets Protoplanetary Disks Solar System History Solar System Gas Giants Earth-like Planets Water in Space Life Elements Protoplanetary Collisions Meteorite Analysis Planetary Atmospheres Building Blocks of Planets Orbital Dynamics Cometary Studies Water Worlds Satellite Dynamics Mars Planetary Systems Transneptunian Objects Theia Hypothesis Solar System Evolution Planetary Evolution Protoplanets Asteroids Debris Disks Earth-Moon System
The peer‑reviewed analysis points to early lunar photochemistry or a Theia inheritance as competing explanations.