What are the key differences between K2-18b and Kepler-22b?

Compare K2-18b and Kepler-22b side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are K2-18b and Kepler-22b scored?

K2-18b has an AI score of 9.3/10 and Kepler-22b has an AI score of 9.0/10. Scores are based on category fit, feature coverage, pricing signals, public reception, and recency.

K2-18b vs Kepler-22b 2026 - Compared

K2-18b

Kepler-22b

WINNER K2-18b

K2-18b edges ahead with a score of 9.3/10 compared to 9.0/10 for Kepler-22b. While both are highly rated in their respec...

emoji_events WINNER

K2-18b edges ahead with a score of 9.3/10 compared to 9.0/10 for Kepler-22b. While both are highly rated in their respective fields, K2-18b demonstrates a slight advantage in our AI ranking criteria. A detailed AI-powered analysis is being prepared for this comparison.

emoji_events Winner: K2-18b

verified Confidence: Low

description Overview

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 for life, particularly focusing on “hycean” environments – those potentially containing oceans and su...

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 resides within its star's habitable zone, the region where liquid water could potentially exist on a planet’s surface. This “super-Earth,” roughly 2.4 times Earth’s size, is notable as one of the first confirmed planets in this zone and offers scientists an opportunity to study pot...