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Best Transiting

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Rankings use category fit, feature coverage, pricing signals, public reception, and recency. Affiliate relationships do not affect scores.

0.0 - 10.0
Best 1 TRAPPIST-1e

TRAPPIST-1e is an Earth-sized exoplanet orbiting the ultra-cool dwarf star TRAPPIST-1. Its location within the habitable zone—the region around a star where liquid water could exist on a planet’s surface—makes it notable. Scientists study this world to assess its potential for hosting conditions sui...

2 HD 209458 b

HD 209458 b is a giant exoplanet orbiting a Sun-like star approximately 153 light-years away. It gained significant attention as the first planet detected through the transit method in 1999. Scientists identified an escaping hydrogen atmosphere, marking the initial confirmation of such atmospheric l...

3 TRAPPIST-1f

TRAPPIST-1f is an Earth-sized exoplanet orbiting the TRAPPIST-1 star. It resides within the habitable zone where liquid water could exist on its surface. Its larger size and lower stellar flux compared to our Sun may result in significant ice coverage. Scientists study this planet for potential sign...

4 KELT-9b
KELT-9b

KELT-9b is a giant exoplanet orbiting the star HD 189733A. It’s notable as the hottest known planet, boasting a dayside temperature exceeding 4,000 Kelvin – hotter than many stars. This ultrahot Jupiter was discovered by the Kentucky Extrasolar Traniting Survey (KELT) in 2017 and is of interest to a...

5 TRAPPIST-1g

TRAPPIST-1g is an Earth-sized exoplanet orbiting the TRAPPIST-1 star. Its notable size, approximately 1.13 times that of Earth, and location within the habitable zone make it a key target in the search for potentially life-supporting worlds. Scientists study this rocky planet to assess its atmospher...

6 Kepler-16b
Kepler-16b

Kepler-16b is a giant exoplanet orbiting two stars. Its notable feature is its circumbinary orbit, meaning it circles both stars simultaneously—a configuration similar to the fictional planet Tatooine. This discovery, made by NASA’s Kepler mission, offers scientists an opportunity to study planetary...

7 HD 189733 b

HD 189733 b is a gas giant exoplanet orbiting a Sun-like star approximately 63 light-years away. It’s notable for possessing a surprisingly detailed atmosphere, allowing scientists to study extreme weather conditions. High-speed winds composed of iron and silicate particles have been observed within...

8 WASP-76b
WASP-76b

WASP-76b is an exoplanet orbiting a distant star, classified as a “hot Jupiter.” Its notable characteristic is its extremely dense atmosphere containing iron vapor. Observations reveal iron rain occurring on the planet’s nightside due to temperature variations. This phenomenon, confirmed through spe...

9 K2-18b
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...

10 WASP-96b
WASP-96b

WASP-96b is a giant exoplanet orbiting a star approximately 843 light-years away. Its atmosphere was studied extensively using the James Webb Space Telescope, yielding one of the earliest publicly available datasets for analyzing exoplanetary atmospheres. This data provides valuable insights into th...

11 TRAPPIST-1c

TRAPPIST-1c is an Earth-sized exoplanet orbiting the ultracool dwarf star TRAPPIST-1. Located within the TRAPPIST system, it’s notable for its potential habitability due to its size and proximity to its star. The planet transits its star regularly making it a target for atmospheric study. Scientists...

12 Kepler-442b

Kepler-442b is an exoplanet orbiting a cooler star approximately 1,200 light-years from Earth. Its size and position within its star’s habitable zone make it notable for potential liquid water on its surface. Scientists study this super-Earth to understand the diversity of planets capable of support...

13 Kepler-62f
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 within its habitable zone. This means it receives approximately the same amount of energy from its star as Earth does, raising possibilities for liquid water on its surface. The planet...

14 TRAPPIST-1b

TRAPPIST-1b is an Earth-sized exoplanet orbiting the ultra compact M-dwarf star TRAPPIST-1. Located 39 light-years from Earth, it’s notable as the closest planet to our solar system and one of seven similar-sized planets in a tightly packed arrangement. Scientists study this transiting planet to und...

15 Kepler-90i
Kepler-90i

Kepler-90i is an Earth-sized exoplanet orbiting within the habitable zone of its star, Kepler-90. Its discovery in 2017 was notable as it represented the first confirmed system containing eight planets. The planet’s detection utilized machine learning analysis of data from NASA's Kepler mission. Thi...

16 Kepler-62e
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 was among the most potentially habitable exoplanets known at that time.

17 TrES-2b
TrES-2b

The darkest known exoplanet, reflecting less than 1% of incident starlight, discovered by the TrES survey in 2006 and subsequently monitored by NASA's Kepler mission.

18 WASP-121b
WASP-121b

An ultra-hot Jupiter with a detected stratosphere and dayside temperatures exceeding 2,400 K, orbiting its host star in roughly 1.27 days with extreme tidal locking.

19 WASP-107b
WASP-107b

A highly inflated super-Neptune exoplanet discovered in 2017, notable for having one of the lowest known densities and a massive helium outflow detected in its atmosphere.

20 LHS 1140 b
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 star, making it a prime target for atmospheric characterization.

21 TRAPPIST-1h

TRAPPIST-1h is the outermost of the seven TRAPPIST-1 planets, announced in 2017; it likely receives insufficient stellar flux for liquid surface water without a strong greenhouse effect.

22 WASP-189b
WASP-189b

A very hot Jupiter orbiting a bright A-type star, studied intensively by ESA's CHEOPS mission and among the hottest known exoplanets with dayside temperatures near 3,400 K.

23 CoRoT-7b
CoRoT-7b

Discovered in 2009 by the French CoRoT space telescope, CoRoT-7b is notable for being the first rocky exoplanet ever found, featuring extreme surface temperatures and molten rock.

24 WASP-17b
WASP-17b

The first exoplanet confirmed to orbit in a retrograde direction relative to its host star's rotation, announced by the WASP consortium in 2009.

25 WASP-127b
WASP-127b

A hot Saturn-mass exoplanet discovered in 2016, notable for its heavily inflated radius, low density, and the detection of multiple alkali metals in its atmosphere.

26 GJ 1214 b
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 exoplanets subjected to detailed atmospheric spectroscopic characterization.

27 Kepler-69c
Kepler-69c

Super-Earth in the Kepler-69 system announced in 2013, orbiting near the inner edge of its habitable zone and considered a potential Venus analog rather than an Earth-like habitable world.

28 HD 219134 b

A rocky super-Earth exoplanet discovered in 2015, notable for being one of the closest transiting exoplanets to our solar system, located just 21 light-years away.

29 WASP-18b
WASP-18b

Massive hot Jupiter (~10 Jupiter masses) with a 0.94-day orbital period discovered by the WASP survey in 2009, making it a prime target for studying tidal dissipation and orbital decay.

30 Kepler-138c

Super-Earth in the Kepler-138 system confirmed in 2015, orbiting its M-dwarf host every ~13.8 days in near orbital resonance with the adjacent Mars-sized companion Kepler-138b.

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