Super-Earths and Earth-like Exoplanets
Tim Lichtenberg, Yamila Miguel

TL;DR
Recent astronomical surveys have expanded our understanding of small, dense exoplanets, revealing diverse compositions, atmospheric properties, and formation processes that challenge existing planetary models and open new avenues for habitability studies.
Contribution
This paper synthesizes recent observational and theoretical advances in the study of super-Earths and Earth-like exoplanets, highlighting the need for cross-disciplinary research and future space-based characterization.
Findings
Efficient volatile accretion in some exoplanets suggests rapid formation and chemical equilibration.
Observational data indicate diverse atmospheric compositions and thermal states.
Future space missions will enable detailed atmospheric characterization and biosignature detection.
Abstract
In the last few years astronomical surveys have expanded the reach of planetary science into the realm of small and dense extrasolar worlds. These share a number of characteristics with the terrestrial and icy planetary objects of the Solar System, but keep stretching previous understanding of the known limits of planetary thermodynamics, material properties, and climate regimes. Improved compositional and thermal constraints on exoplanets below 2 Earth radii suggest efficient accretion of atmosphere-forming volatile elements in a fraction of planetary systems, pointing to rapid formation, planet-scale melting, and chemical equilibration between the core, mantle, and atmosphere of rocky and volatile-rich exoplanets. Meaningful interpretation of novel observational data from these worlds necessitates cross-disciplinary expansion of known material properties under extreme…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
