Exoplanet observatory
Worlds in the habitable zone
A critical atlas of small planets, ocean-world candidates, sub-Neptunes and giants — separated by physical compatibility, evidence quality and observability.
Data: NASA Exoplanet Archive · dynamic query
Observatory menu
Choose the question. Go straight to the answer.
Content is split into focused pages. The menu stays visible and no scientific section depends on an endless scroll.
Catalog
Top 10, 50, 100, 500 — or all
Every size enters: likely rocky worlds, transition planets, sub-Neptunes and giants.
Dossiers
The cases worth a deeper read
Observed, inferred, speculative, next test and references linked to each world.
James Webb
A program is not a result
Approved observations, archived spectra, published results and controversies.
Science
Methods, biases and the next decade
How worlds are found, what remains unmeasured and which missions come next.
History
From the first signal to atmospheric spectra
1992 and 1995, CoRoT, Kepler, TESS, Webb and the next generation — with mission durations and telescope graphics.
Sources
Every claim should be auditable
Data, queries, papers, preprints, programs and limitations explained in one place.
Beyond habitability
Habitable does not mean technological
The conceptual chain from habitable zone to life, complexity, intelligence and cumulative technology.