description GJ 436 b Overview
GJ 436 b is a hot Neptune orbiting a red dwarf ~33 light-years away, discovered in 2004, and notable for a vast comet-like tail of escaping hydrogen gas detected by Hubble.
insights Why this score
GJ 436 b ranks #80 of 269 in the Exoplanet ranking, behind Kepler-20e, ahead of HAT-P-32b.
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How good is GJ 436 b?
GJ 436 b scores 7.18/10 (Good) on Lunoo, making it a well-rated option in the Exoplanet category.
What are the best alternatives to GJ 436 b?
See our alternatives page for GJ 436 b for a ranked list with scores. Top alternatives include: GJ 3470 b, K2-18b, TRAPPIST-1c.
How does GJ 436 b compare to GJ 3470 b?
See our detailed comparison of GJ 436 b vs GJ 3470 b with scores, features, and an AI-powered verdict.
Is GJ 436 b worth it in 2026?
With a score of 7.18/10, GJ 436 b is a solid option in Exoplanet. See all Exoplanet ranked.
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