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The discovery of the Plutonian moons Nix and Hydra, based on photographs taken by the Hubble Space Telescope nearly five months prior, was announced.
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Moons of Pluto
Natural satellites orbiting Pluto
The dwarf planet Pluto has five natural satellites. In order of distance from Pluto, they are Charon, Styx, Nix, Kerberos, and Hydra. Charon, the largest, is mutually tidally locked with Pluto, and is massive enough that Pluto and Charon are sometimes considered a binary dwarf…Source: Wikipedia (CC BY-SA)
Nix (moon)
Moon of Pluto
Nix, formal designation (134340) Pluto II, is a natural satellite of Pluto, with a diameter of 49.8 km (30.9 mi) across its longest dimension. It was discovered along with Pluto's outermost moon Hydra on 15 May 2005 by astronomers using the Hubble Space Telescope, and was named…Source: Wikipedia (CC BY-SA)
Hydra (moon)
Moon of Pluto
Hydra, formal designation (134340) Pluto III, is a natural satellite of Pluto, with a diameter of approximately 51 km (32 mi) across its longest dimension. It is the second-largest moon of Pluto, being slightly larger than Nix. Hydra was discovered along with Nix by astronomers…Source: Wikipedia (CC BY-SA)
Hubble Space Telescope
NASA/ESA space telescope launched in 1990
The Hubble Space Telescope is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for…Source: Wikipedia (CC BY-SA)