What is the most Earth-like exoplanet?
Wolf 1069 b is the most Earth-like exoplanet known, ranked by the Earth Similarity Index (0.97) among habitable-zone worlds. Everything about Wolf 1069 b →
| # | World | Earth Similarity Index | Distance |
|---|---|---|---|
| ★ 1 | Wolf 1069 b | 0.97 | 31.3 ly |
| 2 | TRAPPIST-1 e | 0.95 | 40.5 ly |
| 3 | TOI-700 d | 0.95 | 102 ly |
| 4 | TOI-700 e | 0.94 | 102 ly |
| 5 | Teegarden's Star b | 0.94 | 12.5 ly |
| 6 | Kepler-1649 c | 0.93 | 301 ly |
| 7 | GJ 1061 d | 0.93 | 12.0 ly |
| 8 | GJ 1002 b | 0.93 | 15.8 ly |
| 9 | Kepler-442 b | 0.91 | 1,194 ly |
| 10 | GJ 3378 b | 0.91 | 25.2 ly |
| 11 | Kepler-438 b | 0.89 | 639 ly |
| 12 | Proxima Cen b | 0.89 | 4.2 ly |
| 13 | TRAPPIST-1 f | 0.88 | 40.5 ly |
| 14 | K2-72 e | 0.88 | 217 ly |
| 15 | Kepler-452 b | 0.87 | 1,799 ly |
| 16 | Kepler-1652 b | 0.87 | 822 ly |
| 17 | Ross 128 b | 0.87 | 11.0 ly |
| 18 | Teegarden's Star c | 0.86 | 12.5 ly |
| 19 | L 98-59 f | 0.86 | 34.6 ly |
| 20 | TOI-715 b | 0.85 | 138 ly |
| 21 | TRAPPIST-1 d | 0.85 | 40.5 ly |
| 22 | GJ 1061 c | 0.84 | 12.0 ly |
| 23 | Kepler-1544 b | 0.84 | 1,093 ly |
| 24 | GJ 273 b | 0.83 | 19.3 ly |
| 25 | Kepler-283 c | 0.83 | 1,527 ly |
Showing the top 25 of 278 that qualify.
The Earth Similarity Index is computed by gravityfinder from a world's radius and equilibrium temperature (the Schulze-Makuch 2011 weighting), with Earth defined as 1.0. This record ranks worlds in or near the habitable zone; Earth itself tops the full ranking and is excluded here because it is not an exoplanet.
A high score is not a promise of a second Earth: it says nothing about atmosphere, water, or a breathable sky, only that the size and the sunlight are right. What could unseat this record: a newly confirmed temperate world whose size and temperature land even closer to Earth's; the transit and radial-velocity surveys deliver fresh candidates every year.
What is the most Earth-like exoplanet?
Wolf 1069 b is the most Earth-like exoplanet known, ranked by the Earth Similarity Index (0.97) among habitable-zone worlds.
What makes a planet Earth-like?
On this site, size and temperature: the Earth Similarity Index compares a world's radius and equilibrium temperature with our own and returns a score between 0 and 1. It says nothing about air, water or life, because those have not been measured for any planet on this table.
How similar to Earth is the most Earth-like planet?
Wolf 1069 b scores 0.97 on the Earth Similarity Index, where Earth itself is 1.0. That is close in size and temperature, and it is the beginning of the question rather than the end of it.
Have we found a second Earth?
Not yet, in the sense most people mean. We have found worlds of roughly the right size at roughly the right distance from their star. Confirming an atmosphere, an ocean or a biosphere requires instruments that are only now being built.
Keep exploring: all records · every world ranked by ESI · the best places to visit