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The International Astronomical Union officially named these moons Nix (Pluto II, the inner of the two moons, formerly P 2) and Hydra (Pluto III, the outer moon, formerly P 1), on 21 June 2006. [4] Kerberos, announced on 20 July 2011, was discovered while searching for Plutonian rings.
Nix is a natural satellite of Pluto, with a diameter of 49.8 km (30.9 mi) across its longest dimension. [3] It was discovered along with Pluto's outermost moon Hydra on 15 May 2005 by astronomers using the Hubble Space Telescope, [1] and was named after Nyx, the Greek goddess of the night. [10] Nix is the third moon of Pluto by distance, orbiting between the moons Styx and Kerberos. [11] Nix ...
Hydra is a natural satellite of Pluto, with a diameter of approximately 51 km (32 mi) across its longest dimension. [6] It is the second-largest moon of Pluto, being slightly larger than Nix. Hydra was discovered along with Nix by astronomers using the Hubble Space Telescope on 15 May 2005, [1] and was named after the Hydra, the nine-headed underworld serpent in Greek mythology. [14] By ...
Styx (moon) Styx is a small natural satellite of Pluto whose discovery was announced on 11 July 2012. It was discovered by use of the Hubble Space Telescope, and is the smallest of the five known moons of Pluto. It was imaged along with Pluto and Pluto's other moons by the New Horizons spacecraft in July 2015, albeit poorly with only a single ...
Observations by the James Webb Space Telescope are giving scientists a fuller understanding about the composition and evolution of Pluto's moon Charon, the largest moon orbiting any of our solar ...
Pluto and Charon are sometimes considered a binary system because the barycenter of their orbits does not lie within either body, and they are tidally locked. New Horizons was the first spacecraft to visit Pluto and its moons, making a flyby on July 14, 2015, and taking detailed measurements and observations.
Researchers used observations from the Webb Telescope to identify carbon dioxide and hydrogen peroxide on the surface of Charon, Pluto's largest moon.
Kerberos is a small natural satellite of Pluto, about 19 km (12 mi) in its longest dimension. Kerberos is also the second-smallest moon of Pluto, after Styx. It was the fourth moon of Pluto to be discovered and its existence was announced on 20 July 2011. [1] It was imaged, along with Pluto and its four other moons, by the New Horizons spacecraft in July 2015. [9] The first image of Kerberos ...