Finding Earth 2.0
Exoearth evidence observatory · atmospheres

A spectrum is a reduction, not an atmosphere

Published wavelength-dependent measurements remain attached to their facility, instrument, reference and reduction path. Clear-atmosphere scale heights are shown as scenarios and never mistaken for molecular detections.

Transmission + eclipse archives · reduction-preserving architecture · scenario calculator

8,309

spectral points

published archive measurements

5,948

transmission

measurement rows

2,361

eclipse

measurement rows

1,826

separate reductions

never silently merged

What the analysis found

Different reductions are evidence about uncertainty

When two teams reduce the same target differently, the disagreement is scientifically useful. The pipeline stores each reduction independently and computes overlap diagnostics without selecting a winner or averaging incompatible products.

Open the real spectral measurements →

Earth 2.0 spectrum screen

The strongest result is an evidence gap.

None of the 15 strict small-and-temperate candidates has an indexed published spectrum or tabulated wavelength measurement in the ingested archives.

15

strict candidates

0

indexed spectra

0

measured spectra

The next decisive step is target-specific atmospheric follow-up: obtain a calibrated spectrum, preserve each reduction separately, and test atmospheric models only after instrument and stellar systematics are quantified.

Coverage funnel showing that none of the fifteen strict small temperate candidates has an archived spectrum in the ingested data

This cross-match measures published spectral coverage. It does not detect an atmosphere, identify a molecule, establish habitability, or provide evidence of life.

Atmospheric transmission signal scenarios across candidate planets
Scale-height amplitudes are clear, isothermal atmosphere scenarios. They do not establish that an atmosphere exists or identify molecules.