The universe, now with a search bar.
See what you would weigh, how high you could jump, how long a year lasts and how Earth-like a world is.
Start here
Pick a world and stand on it. Every object links to its star, neighbours, and look-alikes.
Most Earth-like→Worlds closest to home in size and temperatureNearest worlds→Our cosmic neighborhood, closest firstHabitable zone→Where a rocky world could hold liquid waterGalaxies→Zoom out to the wider universe
- ESI
- Earth Similarity Index (1.00 = Earth).
- Weight
- g = multiple of Earth gravity · ≈ estimated from size · ≥ minimum (could be more) · plain number = measured.
Start with a world you know
ESI 0.72
Mars
Rocky world
- Distance
- Solar system
- Your weight
- 0.38 g
- Year
- 1.9 years
ESI 0.67
The Moon
Rocky world
- Distance
- Solar system
- Your weight
- 0.17 g
- Year
- 27 days
ESI 0.35
Jupiter
Gas giant
- Distance
- Solar system
- Cloud-top pull
- 2.53 g
- Year
- 11.9 years
ESI 0.95
TRAPPIST-1 e
Rocky world
- Distance
- 40.5 ly
- Your weight
- 0.82 g
- Year
- 6.1 days
ESI 0.89
Proxima Cen b
Rocky world
- Distance
- 4.2 ly
- Your weight
- ≥ 1.01 g
- Year
- 11 days
ESI 0.87
Kepler-452 b
Rocky world
- Distance
- 1,799 ly
- Your weight
- ≈ 1.24 g
- Year
- 385 days
ESI 0.95
TOI-700 d
Rocky world
- Distance
- 102 ly
- Your weight
- ≈ 1.09 g
- Year
- 37 days
Best, worst & record-breaking
Best places to visitThe most Earth-like, temperate worlds we know, ranked by similarity to home.→Worst places to visitA cosmic travel advisory: the hottest, coldest, and most hostile worlds we know.→What would you weigh?Your exact weight on the Moon, Mars, Jupiter, or any world in the catalog.→Cosmic recordsThe hottest, coldest, densest and closest worlds, and the extremes beyond them.→
Worlds worth the trip
ESI 0.97
Wolf 1069 b
Rocky world
- Distance
- 31.3 ly
- Your weight
- ≥ 1.08 g
- Year
- 16 days
ESI 0.95
TRAPPIST-1 e
Rocky world
- Distance
- 40.5 ly
- Your weight
- 0.82 g
- Year
- 6.1 days
ESI 0.95
TOI-700 d
Rocky world
- Distance
- 102 ly
- Your weight
- ≈ 1.09 g
- Year
- 37 days
ESI 0.94
TOI-700 e
Rocky world
- Distance
- 102 ly
- Your weight
- ≈ 0.90 g
- Year
- 28 days
ESI 0.94
Teegarden's Star b
Rocky world
- Distance
- 12.5 ly
- Your weight
- ≥ 1.05 g
- Year
- 4.9 days
ESI 0.93
Kepler-1649 c
Rocky world
- Distance
- 301 ly
- Your weight
- ≈ 1.07 g
- Year
- 20 days
ESI 0.93
GJ 1061 d
Rocky world
- Distance
- 12.0 ly
- Your weight
- 1.24 g
- Year
- 13 days
ESI 0.93
GJ 1002 b
Rocky world
- Distance
- 15.8 ly
- Your weight
- ≥ 1.02 g
- Year
- 10 days
ESI 0.89
Proxima Cen b
Rocky world
- Distance
- 4.2 ly
- Your weight
- ≥ 1.01 g
- Year
- 11 days
ESI 0.83
Proxima Cen d
Rocky world
- Distance
- 4.2 ly
- Your weight
- ≥ 0.54 g
- Year
- 5.1 days
ESI 0.64
Barnard c
Rocky world
- Distance
- 6.0 ly
- Your weight
- ≥ 0.61 g
- Year
- 4.1 days
ESI 0.59
Barnard b
Rocky world
- Distance
- 6.0 ly
- Your weight
- ≥ 0.58 g
- Year
- 3.2 days
ESI 0.70
Barnard e
Rocky world
- Distance
- 6.0 ly
- Your weight
- ≥ 0.48 g
- Year
- 6.7 days
ESI 0.53
Barnard d
Rocky world
- Distance
- 6.0 ly
- Your weight
- ≥ 0.55 g
- Year
- 2.3 days
ESI 0.21
eps Eri b
Gas giant
- Distance
- 10.4 ly
- Cloud-top pull
- 1.67 g
- Year
- 7.3 years
ESI 0.76
GJ 887 d
Sub-Neptune
- Distance
- 10.7 ly
- Your weight
- ≥ 1.11 g
- Year
- 51 days
KMT-2025-BLG-2272L b
Gas giant
- Distance
- 21,592 ly
- Cloud-top pull
- 4.44 g
- Year
- –
- Discovered
- 2026
KMT-2025-BLG-0030L b
Gas giant
- Distance
- 21,918 ly
- Cloud-top pull
- 1.95 g
- Year
- –
- Discovered
- 2026
KMT-2025-BLG-0026L b
Gas giant
- Distance
- 23,744 ly
- Cloud-top pull
- 3.83 g
- Year
- –
- Discovered
- 2026
OGLE-2016-BLG-0261L b
Gas giant
- Distance
- 25,603 ly
- Cloud-top pull
- 0.72 g
- Year
- –
- Discovered
- 2026
ESI 0.16
HD 715 b
Gas giant
- Distance
- 546 ly
- Cloud-top pull
- 1.40 g
- Year
- 56 days
- Discovered
- 2026
ESI 0.16
HD 278555 b
Gas giant
- Distance
- 945 ly
- Cloud-top pull
- 2.19 g
- Year
- 29 days
- Discovered
- 2026
KMT-2025-BLG-1160L b
Ice / gas giant
- Distance
- 21,461 ly
- Cloud-top pull
- 0.86 g
- Year
- –
- Discovered
- 2026
KMT-2025-BLG-0975L b
Ice / gas giant
- Distance
- 25,841 ly
- Cloud-top pull
- 0.84 g
- Year
- –
- Discovered
- 2026
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