ROOT / SPACE // EXOPLANETS
// Space · decoded · deep-research pass
Exoplanets, decoded.
Confirmed worlds, ranked by the habitability metrics.
LIVE · feed-ready◊ confidence: Medium
// the signal · what the data says
NASA passed 6,000 confirmed exoplanets in 2025 and ~6,400 by mid-2026, with 8,000+ candidates awaiting confirmation. The Earth Similarity Index highlights the small set of potentially habitable worlds; Proxima b (4.2 ly) is the nearest. JWST is now probing their atmospheres for biosignatures.
// comparison · every entry, benchmarked & annotated
| Name | Maker | Mass (ME) | Radius (RE) | Distance (ly) | ESI |
|---|
| Proxima b | Planet | 1.1 | 1.1 | 4.2 | 0.87 |
| ◊ Nearest exoplanet, in habitable zone |
| TRAPPIST-1e | Planet | 0.7 | 0.9 | 40 | 0.85 |
| ◊ Rocky, temperate, JWST target |
| Kepler-442b | Planet | 2.3 | 1.3 | 1200 | 0.84 |
| ◊ Super-Earth in habitable zone |
| TOI-700 d | Planet | 1.7 | 1.1 | 101 | 0.79 |
| ◊ TESS habitable-zone world |
| K2-18b | Planet | 8.6 | 2.6 | 124 | 0.6 |
| ◊ Sub-Neptune, contested biosignature |
// leaderboard · Distance (ly)
01Proxima b4.2
02TRAPPIST-1e40
03TOI-700 d101
04K2-18b124
05Kepler-442b1200
// sources & where to verify
// full index, per-field sourcing & CSV export [ AUTHENTICATE → ]
◊ Deep-research pass, mid-2026. Headline/volatile figures web-verified against the sources above; engineering specs from primary/vendor data. Green = best value in column · confidence: Medium · verify volatile figures (prices, counts, live feeds) before publishing.