Finding Earth 2.0
Exoearth evidence observatory · climate

A habitable zone moves with its star

The present-day orbit is only one frame. MIST stellar tracks and three named Kopparapu boundary prescriptions test whether a planet stays inside a modelled irradiation range through time.

Stellar evolution × climate boundary × measurement uncertainty

6,354

planets evaluated

full confirmed catalogue

815

supported histories

measurement and grid gates passed

22

robustly inside

all implemented prescriptions

16

boundary sensitive

classification changes

What the analysis found

Most planets cannot support a time-resolved claim

The dominant climate result is missing support. Only a subset has the stellar age, mass, metallicity, luminosity and uncertainties needed for a continuous history. Among supported systems, model agreement and disagreement remain explicit rather than being averaged away.

Continuous habitable-zone classifications and sensitivity across climate prescriptions
Climate classifications are conditional on stellar tracks and named one-dimensional boundary prescriptions; they are not observed climates.