swap_horiz K2-18b Alternatives
Looking for alternatives to K2-18b? Compare the top Exoplanet options ranked by our AI scoring system.
K2-18b
K2-18b is a sub-Neptune exoplanet orbiting the M dwarf star K2-18. Located within its star’s habitable zone, it has garnered significant attention due to potential liquid water on its surface. Scientists are studying this planet to understand atmospheric compositions and assess conditions suitable f...
apps Top K2-18b Alternatives
The top alternative to K2-18b in 2026 is Proxima Centauri b with a score of 9.9/10, followed by TRAPPIST-1e (9.8) and TRAPPIST-1f (9.5).
Proxima Centauri b
Proxima Centauri b is an exoplanet orbiting Proxima Centauri, the closest star to our Sun. This super-Earth resides with...
TRAPPIST-1e
TRAPPIST-1e is an Earth-sized exoplanet orbiting the ultra-cool dwarf star TRAPPIST-1. Its location within the habitable...
TRAPPIST-1f
TRAPPIST-1f is an Earth-sized exoplanet orbiting the TRAPPIST-1 star. It resides within the habitable zone where liquid...
TRAPPIST-1g
TRAPPIST-1g is an Earth-sized exoplanet orbiting the TRAPPIST-1 star. Its notable size, approximately 1.13 times that of...
Kepler-1649c
Kepler-1649c is an exoplanet roughly Earth-sized orbiting a red dwarf star named Kepler-1649. Its location within its st...
TRAPPIST-1d
TRAPPIST-1d is an Earth-sized exoplanet orbiting the TRAPPIST-1 star. It resides within the system's habitable zone, rai...
Kepler-442b
Kepler-442b is an exoplanet orbiting a cooler star approximately 1,200 light-years from Earth. Its size and position wit...
TRAPPIST-1c
TRAPPIST-1c is an Earth-sized exoplanet orbiting the ultracool dwarf star TRAPPIST-1. Located within the TRAPPIST system...
Kepler-22b
Kepler-22b is an exoplanet orbiting a G-type star similar to our Sun. Discovered by NASA’s Kepler mission in 2011, it re...
Kepler-62f
Kepler-62f is an exoplanet located in the Kepler-62 system. It’s notable as a super-Earth orbiting a red dwarf star with...
TRAPPIST-1b
TRAPPIST-1b is an Earth-sized exoplanet orbiting the ultra compact M-dwarf star TRAPPIST-1. Located 39 light-years from...
Kepler-62e
Kepler-62e is an exoplanet orbiting the star Kepler-62. It’s notable as a super-Earth residing within its star's habitab...
LHS 1140 b
LHS 1140 b is an exoplanet approximately seven times Earth’s mass, orbiting the M-dwarf star LHS 1140. Its location with...
WASP-43b
WASP-43b is a hot Jupiter exoplanet discovered in 2011 by the Wide Angle Search for Planets survey. It orbits an active...
GJ 1214 b
GJ 1214 b is a sub-Neptune or "mini-Neptune" exoplanet discovered in 2009 orbiting a red dwarf star approximately 42 lig...
Kepler-296f
Kepler-296f is a transiting exoplanet categorized as a super-Earth, located approximately 1,000 light-years away. Confir...
Kepler-296e
Super-Earth confirmed in 2014 orbiting within the habitable zone of Kepler-296, a red dwarf binary system ~1,200 light-y...
TOI-715 b
TOI-715 b is a super-Earth exoplanet discovered by NASA's Transiting Exoplanet Survey Satellite (TESS) through the trans...
K2-3 d
K2-3 d is a transiting exoplanet orbiting K2-3, a nearby cool M-dwarf star. It was identified from observations by NASA’...
TOI-700 c
TOI-700 c is a transiting sub-Neptune exoplanet orbiting the cool red dwarf TOI-700. NASA's Transiting Exoplanet Survey...
summarize Quick Comparison Summary
| Alternative | Score | vs K2-18b | Action |
|---|---|---|---|
| 9.9 Brilliant | +0.6 | Compare | |
| 9.8 Brilliant | +0.5 | Compare | |
| 9.5 Brilliant | +0.2 | Compare | |
| 9.4 Excellent | +0.1 | Compare | |
| 9.3 Excellent | Same | Compare | |
| 9.2 Excellent | -0.1 | Compare | |
| 9.1 Excellent | -0.2 | Compare | |
| 9.1 Excellent | -0.2 | Compare | |
| 9.0 Excellent | -0.3 | Compare | |
| 9.0 Excellent | -0.3 | Compare |
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