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Oldest, largest and most massive planet in the Solar System; [232] this planet hosts 95 known moons including the Galilean moons. Reported for reference. For smaller exoplanets, see the list of smallest exoplanets or other lists of exoplanets. For exoplanets with milestones, see the list of exoplanet extremes and list of exoplanet firsts.
TrES-4b is an exoplanet, one of the largest exoplanets ever found. It was discovered in 2006, and announced in 2007, by the Trans-Atlantic Exoplanet Survey, using the transit method. It is approximately 1,400 light-years (430 pc) away orbiting the star GSC 02620-00648, in the constellation Hercules. [1]
Motion interpolation of seven images of the HR 8799 system taken from the W. M. Keck Observatory over seven years, featuring four exoplanets. This is a list of extrasolar planets that have been directly observed, sorted by observed separations. This method works best for young planets that emit infrared light and are far from the glare of the star.
Scientists say they are rethinking how the weather works after creating a 3D map of an exoplanet 900 light-years away and discovering a world with jet streams fueling wild storms.
There are eight planets within the Solar System; planets outside of the solar system are also known as exoplanets. Artist's concept of the potentially habitable exoplanet Kepler-186f As of 27 February 2025, there are 5,839 confirmed exoplanets in 4,359 planetary systems , with 979 systems having more than one planet . [ 1 ]
For links to specific lists of exoplanets see: List of exoplanets detected by microlensing; List of exoplanets detected by radial velocity; List of exoplanets detected by timing; List of directly imaged exoplanets; List of transiting exoplanets; List of nearest terrestrial exoplanet candidates; Online archives: NASA Exoplanet Archive
Wasp 17b -- The biggest planet discovered by humans is an exoplanet some 1,000 light-years away that can be found in the constellation of Scorpius. It's more than 173,000 miles in diameter.
This large radius refers to the diffuse dust and gas envelope or debris disk surrounding the planet, not the planet itself; these estimates are mistakenly used as a single planetary radius and effective temperature for HD 100546 b by the NASA Exoplanet Archive. A best-fit luminosity was also found by the same study to be 2.3 +0.6