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
Super-Earth announced in 2013 orbiting within the habitable zone of the K-type star Kepler-62; at ~1.61 Earth radii it w...
LHS 1140 b
Discovered in 2017, LHS 1140 b is a super-Earth exoplanet notable for orbiting within the habitable zone of a red dwarf...
WASP-43b
A hot Jupiter exoplanet discovered in 2011 that orbits the active K-type star WASP-43, notable for its extremely short o...
GJ 1214 b
GJ 1214 b is a mini-Neptune discovered in 2009 orbiting a red dwarf 42 light-years away; it was among the first small ex...
Kepler-296f
Kepler-296f is a super-Earth orbiting within the habitable zone of a binary M-dwarf system ~1,000 light-years away, conf...
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
Discovered in 2023 by NASA's TESS satellite, TOI-715 b is a super-Earth exoplanet notable for orbiting a red dwarf star...
K2-3 d
A mini-Neptune exoplanet discovered in 2015, notable for orbiting near the inner edge of the habitable zone of the nearb...
TOI-700 c
Discovered by NASA's TESS satellite, TOI-700 c is a mini-Neptune exoplanet notable for being part of a multi-planet syst...
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 |
See all Exoplanet ranked by score
emoji_events View Full Exoplanet Rankings
